scholarly journals Progress of Disintegration of Polylactide (PLA)/Poly(Butylene Succinate) (PBS) Blends Containing Talc and Chalk Inorganic Fillers under Industrial Composting Conditions

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 10
Author(s):  
Sengül Tolga ◽  
Stephan Kabasci ◽  
Mona Duhme
Keyword(s):  
Degradation Process ◽  
Poly Lactic Acid ◽  
Specimen Thickness ◽  
Erosion Process ◽  
Scanning Calorimetry ◽  
Butylene Succinate ◽  
Surface Textures ◽  
Increasing Demand ◽  
Mineral Fillers ◽  
Industrial Composting

Biodegradable plastics are experiencing increasing demand, in particular because of said property. This also applies to the two biopolyesters poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) covered in this study. Both are proven to be biodegradable under industrial composting conditions. This study presents the influence of mineral fillers on the disintegration process of PLA/PBS blend systems under such conditions. Chalk and talc were used as fillers in PLA/PBS (7:3) blend systems. In addition, unfilled PLA/PBS (7:3/3:7) blend systems were considered. Microscopic images, differential scanning calorimetry and tensile test measurements were used in addition to measuring mass loss of the specimen to characterize the progress of disintegration. The mineral fillers used influence the disintegration behavior of PLA/PBS blends under industrial composting conditions. In general, talc leads to lower and chalk to higher disintegration rates. This effect is in line with the measured decrease in mechanical properties and melting enthalpies. The degrees of disintegration almost linearly correlate with specimen thickness, while different surface textures showed no clear effects. Thus, we conclude that disintegration in a PLA/PBS system proceeds as a bulk erosion process. Using fillers to control the degradation process is generally regarded as possible.

Base-Catalyzed Hydrolysis Behavior of PLA/PBS Blends

2013 ◽  
Vol 821-822 ◽  
pp. 941-944
Author(s):  
Shi Jie Zhang ◽  
Yi Wen Tang ◽  
Li Hua Cheng
Keyword(s):  
Molecular Weight ◽  
Lactic Acid ◽  
Degradation Rate ◽  
Degradation Process ◽  
Poly Lactic Acid ◽  
Biodegradable Materials ◽  
Butylene Succinate ◽  
New Type

Poly (butylene succinate) (PBS) was mixed with Poly (lactic acid) (PLA) through Haake Reomix, a new type of biodegradable materials can be obtained. With the increasing addition of PBS and the raise of the solution basicity, the degradation rate of blends increase sharply. The GPC analysis can approve the reduction of molecular weight in the degradation process of PLA/PBS blends.

scholarly journals Enzymatic degradation of poly(butylene succinate) copolyesters synthesized with the use of Candida antarctica lipase B

2018 ◽  
Author(s):  
Aleksandra Wcislek ◽  
Agueda Sonseca Olalla ◽  
Andrew McClain ◽  
Agnieszka Piegat ◽  
Peter Sobolewski ◽  
...  
Keyword(s):  
Mass Loss ◽  
Enzymatic Degradation ◽  
Degradation Process ◽  
Candida Antarctica ◽  
Degree Of Crystallinity ◽  
Surface Erosion ◽  
Fibrous Materials ◽  
Lipase B ◽  
Scanning Calorimetry ◽  
Butylene Succinate

<div><div><div><p>Abstract: Biodegradable polymers are an active area of investigation, particularly ones that can be produced from sustainable, biobased monomers, such as copolymers of poly(butylene succinate) (PBS). In this study, we examine the enzymatic degradation of poly(butylene succinate-dilinoleic succinate) (PBS-DLS) copolymers obtained by “green” enzymatic synthesis using lipase B from Candida antarctica (CALB). The copolymers differed in their hard to soft segments ratio, from 70:30 to 50:50 wt.%. Enzymatic degradation was carried out on electrospun membranes (scaffolds) and compression-moulded films using lipase fromPseudomomas cepacia. Poly(e-caprolactone) (PCL) was used as a reference aliphatic polyester. The degradation process was monitored gravimetrically via water uptake and mass loss. After 24 days, approx. 40% mass loss was observed for fibrous materials prepared from PBS-DLS 70:30 copolymer, as compared to approx. 10% mass loss for PBS-DLS 50:50. Infrared spectroscopy (FTIR) and SEC analysis were used to examine changes in chemical structure. Differential scanning calorimetry (DSC) and scanning light microscopy (LSM) revealed changes in degree of crystallinity, and changes in surface morphology, consistent with a surface erosion mechanism. We conclude that the obtained copolymers are suitable for tissue engineering applications thanks to tuneable degradation and lack of acidification during breakdown.</p></div></div></div>

scholarly journals Effect of Cellulosic Waste Derived Filler on the Biodegradation and Thermal Properties of HDPE and PLA Composites

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 647
Author(s):  
Alessia Quitadamo ◽  
Valerie Massardier ◽  
Valeria Iovine ◽  
Ahmed Belhadj ◽  
Rémy Bayard ◽  
...  
Keyword(s):  
Wood Flour ◽  
Polymer Degradation ◽  
Degradation Process ◽  
Poly Lactic Acid ◽  
Mass Reduction ◽  
Mass Variation ◽  
Scanning Calorimetry ◽  
Cellulosic Waste ◽  
Relevant Variation ◽  
Natural Fillers

Composites with high density polyethylene (HDPE) and poly(lactic) acid (PLA) matrix have been tested to analyze the effect of natural fillers (wood flour, recycled wastepaper and a mix of both fillers) and temperature on polymer degradation. Composting tests have been performed in both mesophilic (35 °C) and thermophilic (58 °C) conditions. Degradation development has been evaluated through mass variation, thermogravimetric analysis and differential scanning calorimetry. HDPE, as expected, did not display any relevant variation, confirming its stability under our composting conditions. PLA is sensibly influenced by temperature and humidity, with higher reduction of Mw when composting is performed at 58 °C. Natural fillers seem to influence degradation process of composites, already at 35 °C. In fact, degradation of fillers at 35 °C allows a mass reduction during composting of composites, while neat PLA do not display any variation.

scholarly journals Enzymatic degradation of poly(butylene succinate) copolyesters synthesized with the use of Candida antarctica lipase B

2018 ◽  
Author(s):  
Aleksandra Wcislek ◽  
Agueda Sonseca Olalla ◽  
Andrew McClain ◽  
Agnieszka Piegat ◽  
Peter Sobolewski ◽  
...  
Keyword(s):  
Mass Loss ◽  
Enzymatic Degradation ◽  
Degradation Process ◽  
Candida Antarctica ◽  
Degree Of Crystallinity ◽  
Surface Erosion ◽  
Fibrous Materials ◽  
Lipase B ◽  
Scanning Calorimetry ◽  
Butylene Succinate

<div><div><div><p>Abstract: Biodegradable polymers are an active area of investigation, particularly ones that can be produced from sustainable, biobased monomers, such as copolymers of poly(butylene succinate) (PBS). In this study, we examine the enzymatic degradation of poly(butylene succinate-dilinoleic succinate) (PBS-DLS) copolymers obtained by “green” enzymatic synthesis using lipase B from Candida antarctica (CALB). The copolymers differed in their hard to soft segments ratio, from 70:30 to 50:50 wt.%. Enzymatic degradation was carried out on electrospun membranes (scaffolds) and compression-moulded films using lipase fromPseudomomas cepacia. Poly(e-caprolactone) (PCL) was used as a reference aliphatic polyester. The degradation process was monitored gravimetrically via water uptake and mass loss. After 24 days, approx. 40% mass loss was observed for fibrous materials prepared from PBS-DLS 70:30 copolymer, as compared to approx. 10% mass loss for PBS-DLS 50:50. Infrared spectroscopy (FTIR) and SEC analysis were used to examine changes in chemical structure. Differential scanning calorimetry (DSC) and scanning light microscopy (LSM) revealed changes in degree of crystallinity, and changes in surface morphology, consistent with a surface erosion mechanism. We conclude that the obtained copolymers are suitable for tissue engineering applications thanks to tuneable degradation and lack of acidification during breakdown.</p></div></div></div>

Physical and Mechanical Properties of Poly(Butylene Succinate) and Poly(Lactic Acid) under Landfill Conditions

2020 ◽  
Vol 856 ◽  
pp. 245-252
Author(s):  
Narumon Seeponkai ◽  
Krisana Poolsawat
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Physical And Mechanical Properties ◽  
Degradation Process ◽  
Chain Scission ◽  
Poly Lactic Acid ◽  
Ester Bond ◽  
Butylene Succinate ◽  
Erosion Mechanism ◽  
Scanning Electron

In this study, the disintegration of poly(butylene succinate)(PBS) and poly(lactic acid) (PLA) under landfill conditions was investigated. Both polymers were melted, injected into a dumbbell-shape, and buried under the soil for 20 weeks. The morphology of the polymer from the scanning electron microscope (SEM) revealed that, after 6 weeks of the burial, the PBS polymer produced many micro-voids in the bulk of polymer. The amount of the voids increased with time. While the morphology of PLA showed a few voids and some cracks during the degradation process. Moreover, the mechanical properties of the PLA were decreased after 2 weeks following with PBS after 4 weeks of the burial times. The weight loss and the water uptake of PBS and PLA were slightly increased. From the result, it was found that the degradation of PBS and PLA proceeds via random chain scission of the ester bond through bulk erosion mechanism. The degradation of PLA degraded faster than the PBS due to the low crystallinity in the polymer chain. This result can be applied to the design waste management of biodegradable polymer products.

scholarly journals Enzymatic degradation of poly(butylene succinate) copolyesters synthesized with the use of Candida antarctica lipase B

2018 ◽  
Author(s):  
Aleksandra Wcislek ◽  
Agueda Sonseca Olalla ◽  
Andrew McClain ◽  
Agnieszka Piegat ◽  
Peter Sobolewski ◽  
...  
Keyword(s):  
Mass Loss ◽  
Enzymatic Degradation ◽  
Degradation Process ◽  
Candida Antarctica ◽  
Degree Of Crystallinity ◽  
Surface Erosion ◽  
Fibrous Materials ◽  
Lipase B ◽  
Scanning Calorimetry ◽  
Butylene Succinate

<div><div><div><p>Abstract: Biodegradable polymers are an active area of investigation, particularly ones that can be produced from sustainable, biobased monomers, such as copolymers of poly(butylene succinate) (PBS). In this study, we examine the enzymatic degradation of poly(butylene succinate-dilinoleic succinate) (PBS-DLS) copolymers obtained by “green” enzymatic synthesis using lipase B from Candida antarctica (CALB). The copolymers differed in their hard to soft segments ratio, from 70:30 to 50:50 wt.%. Enzymatic degradation was carried out on electrospun membranes (scaffolds) and compression-moulded films using lipase fromPseudomomas cepacia. Poly(e-caprolactone) (PCL) was used as a reference aliphatic polyester. The degradation process was monitored gravimetrically via water uptake and mass loss. After 24 days, approx. 40% mass loss was observed for fibrous materials prepared from PBS-DLS 70:30 copolymer, as compared to approx. 10% mass loss for PBS-DLS 50:50. Infrared spectroscopy (FTIR) and SEC analysis were used to examine changes in chemical structure. Differential scanning calorimetry (DSC) and scanning light microscopy (LSM) revealed changes in degree of crystallinity, and changes in surface morphology, consistent with a surface erosion mechanism. We conclude that the obtained copolymers are suitable for tissue engineering applications thanks to tuneable degradation and lack of acidification during breakdown.</p></div></div></div>

Enzymatic Degradation of Candida Antarctica Lipase B Catalyzed Poly(butylene Succinate) Copolyesters Containing Dimer Linoleic Diol

2018 ◽  
Author(s):  
Aleksandra Wcislek ◽  
Agueda Sonseca ◽  
Andrew McClain ◽  
Agnieszka Piegat ◽  
Peter Sobolewski ◽  
...  
Keyword(s):  
Mass Loss ◽  
Enzymatic Degradation ◽  
Degradation Process ◽  
Candida Antarctica ◽  
Degree Of Crystallinity ◽  
Surface Erosion ◽  
Fibrous Materials ◽  
Lipase B ◽  
Scanning Calorimetry ◽  
Butylene Succinate

<div><div><div><p>Biodegradable polymers are an active area of investigation, particularly ones that can be produced from sustainable, biobased monomers, such as copolymers of poly(butylene succinate) (PBS). In this study, we examine the enzymatic degradation of poly(butylene succinate-dilinoleic succinate) (PBS-DLS) copolymers obtained by “green” enzymatic synthesis using lipase B from Candida antarctica (CALB). The copolymers differed in their hard to soft segments ratio, from 70:30 to 50:50 wt.%. Enzymatic degradation was carried out on electrospun membranes (scaffolds) and compression-moulded films using lipase fromPseudomomas cepacia. Poly(e-caprolactone) (PCL) was used as a reference aliphatic polyester. The degradation process was monitored gravimetrically via water uptake and mass loss. After 24 days, approx. 40% mass loss was observed for fibrous materials prepared from PBS-DLS 70:30 copolymer, as compared to approx. 10% mass loss for PBS-DLS 50:50. Infrared spectroscopy (FTIR) and SEC analysis were used to examine changes in chemical structure. Differential scanning calorimetry (DSC) and scanning light microscopy (LSM) revealed changes in degree of crystallinity, and changes in surface morphology, consistent with a surface erosion mechanism. We conclude that the obtained copolymers are suitable for tissue engineering applications thanks to tuneable degradation and lack of acidification during breakdown.</p></div></div></div>

scholarly journals Toughened Poly(Lactic Acid)—PLA Formulations by Binary Blends with Poly(Butylene Succinate-co-Adipate)—PBSA and Their Shape Memory Behaviour

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 622 ◽  
Author(s):  
Diego Lascano ◽  
Luis Quiles-Carrillo ◽  
Rafael Balart ◽  
Teodomiro Boronat ◽  
Nestor Montanes
Keyword(s):  
Lactic Acid ◽  
Shape Memory ◽  
Mechanical Performance ◽  
Extrusion Process ◽  
International Standards ◽  
Bending Test ◽  
Poly Lactic Acid ◽  
Scanning Calorimetry ◽  
Butylene Succinate ◽  
Shape Memory Behaviour

This study reports the effect of poly(butylene succinate-co-adipate) (PBSA) on the mechanical performance and shape memory behavior of poly(lactic acid) (PLA) specimens that were manufactured by injection molding and hot-press molding. The poor miscibility between PLA and PBSA was minimized by the addition of an epoxy styrene-acrylic oligomer (ESAO), which was commercially named Joncryl®. It was incorporated during the extrusion process. Tensile, impact strength, and hardness tests were carried out following international standards. PLA/PBSA blends with improved mechanical properties were obtained, which highlighted the sample that was compatibilized with ESAO, leading to a remarkable enhancement in elongation at break, but showing poor shape memory behaviour. Field Emission Scanning Electron Microscopy (FESEM) images showed how the ductile properties were improved, while PBSA loading increased, thus leading to minimizing the brittleness of neat PLA. The differential scanning calorimetry (DSC) analysis revealed the low miscibility between these two polymers and the improving effect of PBSA in PLA crystallization. The bending test carried out on the sheets of PLA/PBSA blends showed the direct influence that the PBSA has on the reduction of the shape memory that is intrinsically offered by neat PLA.

scholarly journals Preparation, Mechanical, and Thermal Properties of Biodegradable Polyesters/Poly(Lactic Acid) Blends

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Peng Zhao ◽  
Wanqiang Liu ◽  
Qingsheng Wu ◽  
Jie Ren
Keyword(s):  
Lactic Acid ◽  
Gel Permeation Chromatography ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Scanning Calorimetry ◽  
Butylene Succinate ◽  
Biodegradable Polyesters ◽  
H Nmr ◽  
Melt Polycondensation ◽  
Twin Screw

Series of biodegradable polyesters poly(butylene adipate) (PBA), poly(butylene succinate) (PBS), and poly(butylene adipate-co-butylene terephthalate) (PBAT) were synthesized successfully by melt polycondensation. The polyesters were characterized by Fourier transform infrared spectroscopy (FTIR),1H-NMR, differential scanning calorimetry (DSC), and gel permeation chromatography (GPC), respectively. The blends of poly(lactic acid) (PLA) and biodegradable polyester were prepared using a twin screw extruder. PBAT, PBS, or PBA can be homogenously dispersed in PLA matrix at a low content (5–20 wt%), yielding the blends with much higher elongation at break than homo-PLA. DSC analysis shows that the isothermal and nonisothermal crystallizabilities of PLA component are promoted in the presence of a small amount of PBAT.

scholarly journals Wine By-Products as Raw Materials for the Production of Biopolymers and of Natural Reinforcing Fillers: A Critical Review

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 381
Author(s):  
Alessandro Nanni ◽  
Mariafederica Parisi ◽  
Martino Colonna
Keyword(s):  
Critical Review ◽  
Raw Materials ◽  
Green Revolution ◽  
Building Blocks ◽  
Poly Lactic Acid ◽  
Butylene Succinate ◽  
Reinforcing Fillers ◽  
Plastic Industry ◽  
Review Reports ◽  
By Products

The plastic industry is today facing a green revolution; however, biopolymers, produced in low amounts, expensive, and food competitive do not represent an efficient solution. The use of wine waste as second-generation feedstock for the synthesis of polymer building blocks or as reinforcing fillers could represent a solution to reduce biopolymer costs and to boost the biopolymer presence in the market. The present critical review reports the state of the art of the scientific studies concerning the use of wine by-products as substrate for the synthesis of polymer building blocks and as reinforcing fillers for polymers. The review has been mainly focused on the most used bio-based and biodegradable polymers present in the market (i.e., poly(lactic acid), poly(butylene succinate), and poly(hydroxyalkanoates)). The results present in the literature have been reviewed and elaborated in order to suggest new possibilities of development based on the chemical and physical characteristics of wine by-products.

Sign in / Sign up

Export Citation Format

Share Document