Structure-property relationship of biodegradable poly(butylene succinate)/polycaprolactone coated inorganic particle composites

2013 ◽  
Vol 33 (2) ◽  
pp. 111-119
Author(s):  
Yiming Liu ◽  
Qing Liu ◽  
Bing Meng ◽  
Zhihua Wu
Keyword(s):  
Impact Strength ◽  
High Speed ◽  
Complex Viscosity ◽  
Structure Property ◽  
Scanning Calorimetry ◽  
Butylene Succinate ◽  
Elongation At Break ◽  
Inorganic Particle ◽  
Biodegradable Poly ◽  
The Impact

Abstract Polycaprolactone (PCL)-coated micro kaolin and nano-titania were prepared by high-speed hybrid mechanical coating. Poly(butylene succinate) (PBS)-coated inorganic particle composites were prepared by the melt-blending process. The influence of coated kaolin microparticles on the dynamic rheological behavior, non-isothermal crystallization behavior, micromorphology, and mechanical behavior were investigated. The effect of coated nano-titania on the mechanical properties of PBS-coated kaolin composites was also studied. A dynamic rheological property indicates that the complex viscosity of PBS-coated kaolin microcomposites is higher than neat PBS. Differential scanning calorimetry (DSC) implies that the micrometric size of kaolin particles restrains the crystallization of PBS. Scanning electronic microscopy (SEM) reveals a well dispersed state of coated kaolin in the polymer matrix. The impact strength of PBS-coated kaolin microcomposites is improved, while the tensile strength and elongation at break is decreased, but still appreciable. The introduction of coated nano-titania improves the impact strength dramatically, and the elongation at break of composites is considerable.

scholarly journals The Impact of Artificial Marble Wastes on Heat Deflection Temperature, Crystallization, and Impact Properties of Polybutylene Terephthalate

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4242
Author(s):  
Tianliang Feng ◽  
Yangzhou Li ◽  
Liang Fang ◽  
Zhenming Chen
Keyword(s):  
Impact Strength ◽  
Resource Utilization ◽  
Melt Blending ◽  
X Ray Diffraction ◽  
Polybutylene Terephthalate ◽  
Scanning Calorimetry ◽  
Electron Microscope Analysis ◽  
Heat Deflection Temperature ◽  
The Impact ◽  
Temperature Crystallization

As artificial marble is abundant and widely used in residential and commercial fields, the resource utilization of artificial marble wastes (AMWs) has become extremely important in order to protect the environment. In this paper, polybutylene terephthalate/artificial marble wastes (PBT/AMWs) composites were prepared by melt blending to maximize resource utilization and increase PBT performance. The research results showed that the filling of AMWs was beneficial to the improvement of PBT-related performance. X-ray diffraction analysis results indicated that after filling AMWs into the PBT matrix, the crystal structure of PBT was not changed. Heat deflection temperature (HDT) analysis results indicated that the HDT of PBT composites with 20 wt% AMWs reached 66.68 °C, which was 9.12 °C higher than that of neat PBT. Differential scanning calorimetry analysis results showed that heterogeneous nucleation could be well achieved when the filling content was 15 wt%; impact and scanning electron microscope analysis results showed that due to the partial core-shell structure of the AMWs, the impact strength of PBT was significantly improved after filling. When the filling amount was 20 wt%, the impact strength of the PBT composites reached 23.20 kJ/m2, which was 17.94 kJ/m2 higher than that of neat PBT. This research will not only provide new insights into the efficient and high-value utilization of AMWs, but also provide a good reference for improved applications of other polymers.

scholarly journals The combined plasticization of jute and tung oil anhydride for jute fiber reinforced poly(lactic acid) composites

2021 ◽  
pp. 096739112110576
Author(s):  
Ying Zhou ◽  
Can Chen ◽  
Lan Xie ◽  
Xiaolang Chen ◽  
Guangqiang Xiao ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Physical And Mechanical Properties ◽  
Complex Viscosity ◽  
Poly Lactic Acid ◽  
Melt Blending ◽  
Sem Images ◽  
Pseudoplastic Fluid ◽  
Tung Oil ◽  
Biodegradable Poly ◽  
The Impact

In this work, novel plasticizing biodegradable poly (lactic acid) (PLA) composites were prepared by melt blending of jute and tung oil anhydride (TOA), and the physical and mechanical properties of PLA/jute/TOA composites were tested and characterized. The impact strength of PLA/jute/TOA composites significantly increases with increasing the content of TOA. The SEM images of fracture surface of PLA/jute/TOA composites become rough after the incorporation of TOA. In addition, TOA changes the crystallization temperature and decomposition process of PLA/jute/TOA composites. With increasing the amount of TOA, the value of storage modulus (E′) of PLA/jute/TOA composites gradually increases. The complex viscosity (η*) values for all samples reduce obviously with increasing the frequency, which means that the pure PLA and PLA/jute/TOA composites is typical pseudoplastic fluid. This is attributed to the formation of crosslinking, which restricts the deformation of the composites.

scholarly journals Impact Toughness and Ductility Enhancement of Biodegradable Poly(lactic acid)/Poly(ε-caprolactone) Blends via Addition of Glycidyl Methacrylate

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Wei Kit Chee ◽  
Nor Azowa Ibrahim ◽  
Norhazlin Zainuddin ◽  
Mohd Faizal Abd Rahman ◽  
Buong Woei Chieng
Keyword(s):  
Lactic Acid ◽  
Impact Strength ◽  
Glycidyl Methacrylate ◽  
Interfacial Adhesion ◽  
Tensile Modulus ◽  
Sem Analysis ◽  
Poly Lactic Acid ◽  
Biodegradable Poly ◽  
Interfacial Compatibility ◽  
The Impact

Poly(lactic acid) (PLA)/poly(ε-caprolactone) (PCL) blends were prepared via melt blending technique. Glycidyl methacrylate (GMA) was added as reactive compatibilizer to improve the interfacial adhesion between immiscible phases of PLA and PCL matrices. Tensile test revealed that optimum in elongation at break of approximately 327% achieved when GMA loading was up to 3wt%. Slight drop in tensile strength and tensile modulus at optimum ratio suggested that the blends were tuned to be deformable. Flexural studies showed slight drop in flexural strength and modulus when GMA wt% increases as a result of improved flexibility by finer dispersion of PCL in PLA matrix. Besides, incorporation of GMA in the blends remarkably improved the impact strength. Highest impact strength was achieved (160% compared to pure PLA/PCL blend) when GMA loading was up to 3 wt%. SEM analysis revealed improved interfacial adhesion between PLA/PCL blends in the presence of GMA. Finer dispersion and smooth surface of the specimens were noted as GMA loading increases, indicating that addition of GMA eventually improved the interfacial compatibility of the nonmiscible blend.

scholarly journals The Effect of Crystallinity on the Toughness of Cast Polyamide 6 Rods with Different Diameters

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 293
Author(s):  
Miklós Odrobina ◽  
Tamás Deák ◽  
László Székely ◽  
Tamás Mankovits ◽  
Róbert Zsolt Keresztes ◽  
...  
Keyword(s):  
Impact Strength ◽  
Impact Test ◽  
Charpy Impact ◽  
Polyamide 6 ◽  
Degree Of Crystallinity ◽  
Scanning Calorimetry ◽  
Tensile Impact ◽  
Different Diameters ◽  
The Impact ◽  
The Degree Of Crystallinity

The present paper concentrates on the toughness and the degree of crystallinity of the magnesium-catalyzed polyamide 6 rods cast in different diametres, which are commonly used for gear manufacturing. Its toughness cannot be regarded as a constant feature due to the casting technology. The mechanical properties of the semi-finished products are sensitive to the manufactured dimension, e.g., cast diameter, which are investigated by the Charpy impact test and tensile impact test. It is generally accepted that the impact strength and tensile-impact strength correlate with the degree of crystallinity beside many other material’s feature. Crystallinity is evaluated by Differential Scanning Calorimetry. The aim of this study is to determine the relationship between toughness and crystallinity of the magnesium-catalyzed cast PA6 rods with different diameters. For the research cast rods between 40 and 300 mm diameter were selected in seven-dimensional steps. Based on the results, it was found that the toughness depends strongly on the diameter size. Furthermore, it is proved that the crystallinity explains 62.3% of the variation of the Charpy’s impact strengths, while the tensile impact method was not suitable to detect the difference between the test samples.

Toughening Modification of Poly(butylene terephthalate)/Polycarbonate Blends by Poly(ethylene-co-octene)

2005 ◽  
Vol 13 (4) ◽  
pp. 385-394
Author(s):  
Huiyu Bai ◽  
Yong Zhang ◽  
Yinxi Zhang ◽  
Xiangfu Zhang ◽  
Wen Zhou
Keyword(s):  
Average Diameter ◽  
Melt Blending ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Bisphenol A Polycarbonate ◽  
Elongation At Break ◽  
Butylene Terephthalate ◽  
Twin Screw ◽  
Poly Ethylene ◽  
The Impact

New toughened poly(butylene terephthalate) (PBT)/bisphenol A polycarbonate (PC) blends were obtained by melt blending with commercial poly(ethylene-co-octene) copolymer (POE), varying the POE content up to 10 wt%, in a twin screw extruder, followed by injection moulding. The influence of POE on the properties of the PBT/PC blends was investigated in terms of mechanical testing, dynamic mechanical thermal (DMTA) analysis, differential scanning calorimetry (DSC), and scanning electronic microscopy (SEM). The results showed that addition of POE led to remarkable increases in the impact strength, elongation at break and Vicat temperature, and a reduction in the tensile strength and flexural properties of PBT/PC blends. The morphology of the blends was observed using SEM and the average diameter of the dispersed phase was determined by image analysis. The critical inter-particle distance for PBT/PC was determined.

Physical and rheological properties of biodegradable poly(butylene succinate)/Alfa fiber composites

2020 ◽  
pp. 089270572090409
Author(s):  
Khadidja Arabeche ◽  
Fatiha Abdelmalek ◽  
Laurent Delbreilh ◽  
Latéfa Zair ◽  
Abdelkader Berrayah
Keyword(s):  
Rheological Properties ◽  
Complex Modulus ◽  
Fiber Composite ◽  
Cellulose Fiber ◽  
Complex Viscosity ◽  
Nucleating Agent ◽  
Butylene Succinate ◽  
Molding Method ◽  
Alfa Fibers ◽  
Biodegradable Poly

Biodegradable poly(butylene succinate) (PBS)/Alfa fiber biocomposites were prepared through the compression molding method. Scanning electron microscopy images were acquired to assess the effects of reinforcement and homogenization of mixtures and to determine the characteristics of the microstructure. The rheological properties, melting, and crystallization behavior of neat PBS and its biocomposites were investigated. Regarding the thermal properties, it was observed that the presence of Alfa fibers facilitates the crystallization of the PBS matrix, which suggests that Alfa cellulose fiber acts as a nucleating agent. The rheological analysis suggests that the biocomposites show a better dynamic behavior with the addition of Alfa fibers. Indeed, the incorporation of fibers increased the complex modulus and complex viscosity of the composites. Also, increasing the percentage of fibers in the matrix induces percolation, the shift and change in the slope of Cole–Cole curve of the PBS/Alfa fiber composite compared to that of neat PBS indicate that the PBS microstructure has changed with the addition of fibers. Moreover, the improvement of biocomposites properties is believed to be largely attributable to the homogeneous dispersion of the Alfa fibers within the polymer matrix and also to the strong interfacial interactions between the two constituents.

Preparation and Characterization of Poly(L-Lactide-Co-ε-Caprolactone) Copolymer for Food Packaging Application

2013 ◽  
Vol 779-780 ◽  
pp. 231-234 ◽  
Author(s):  
Ming Wei Yuan ◽  
Yu Yue Qin ◽  
Ji Yi Yang ◽  
Yan Wu ◽  
Ming Long Yuan ◽  
...  
Keyword(s):  
Food Packaging ◽  
Feed Ratio ◽  
Solution Polymerization ◽  
Scanning Calorimetry ◽  
Feed Composition ◽  
Elongation At Break ◽  
Plla Film ◽  
Neat Plla ◽  
Biodegradable Poly

Biodegradable poly (L-lactide-co-ε-caprolactone) (PLA-PCL) copolymers were synthesized via solution polymerization by varying the feed composition of L-lactide (LLA) and ε-caprolactone (ε-CL) (LLA/ ε-CL= 1/0, 1/1, 1/2, and 1/3). PLA-PCL film was produced by solution mixing. The films were characterized by thermal property, mechanical property, and barrier behavior tests to evaluate the effect of the PCL. The differential scanning calorimetry analyses revealed the micro-domain structure in the copolymer. The elongation at break of PLLA was improved significantly (p<0.05) in PLA-PCL copolymer while the tensile strength decreased significantly (p<0.05) with increase of PCL content. WVP of PLA-PCL films significantly decreased (p< 0.05) when compared with that of neat PLLA film. When the feed ratio of PLA-PCL copolymer increased from 1/0 to 1/3, WVP of PLA-PCL films increased from 1.85±0.15 (×10-11gm/m2sPa) to 2.83±0.26 (×10-11gm/m2sPa). The results showed that PLA-PCL copolymer can be a novel film for food packaging applications.

Study on the Crystallization and Morphology of HDPE-g-GMA Modified PA66/UHMWPE Blends

2010 ◽  
Vol 123-125 ◽  
pp. 239-242
Author(s):  
Zi Nian Zhao ◽  
Wen Hua Zhang ◽  
Gang Qiang Lei
Keyword(s):  
Impact Strength ◽  
Sem Analysis ◽  
Mass Ratio ◽  
Polyamide 66 ◽  
Scanning Calorimetry ◽  
Elongation At Break ◽  
Melt Compounding ◽  
Twin Screw ◽  
Ultra High Molecular Weight ◽  
Comprehensive Property

By means of melt compounding method, the Glycidyl methacrylate (GMA) grafted HDPE modified Polyamide 66 (PA66) with ultra high molecular weight polyethylene (UHMWPE) blends were prepared via the co-rotating twin screw extruder．The effects of different UHMWPE/HDPE contents on properties of PA66/UHMWPE blends were investigated．Meanwhile, the mechanical properties such as tensile and impact strength etc. were investigated. By using the differential scanning calorimetry (DSC) and scanning electron microscope (SEM), the crystalline and morphology of PA66/UHMWPE blends were analyzed. The results show that UHMWPE toughened PA66 samples exhibit significantly enhanced impact strength and elongation at break comparison with natural PA66. The samples of PA66 with 30% of UHMWPE/HDPE (mass ratio 3/7) blends show impact strength about 2 times and elongation at yield 7 times more than those of natural PA66．The behavior of HDPE-g-GMA shows an effective compatibilizer for PA66/UHMWPE blends, when the mass ratio of PA66/(UHMWPE/HDPE) at 70:30, the blend indicates the best comprehensive property. The investigation on crystallization and morphology of PA66 and their blends show that the behaviors of melting about the two components are independent either PA66 or UHMWPE/HDPE. There are independent melting behaviors, meanwhile, interacted each other between PA66 and UHMWPE. Due to the good compatibility which HDPE-g-GMA contributed, the homogenous PA66/UHMWPE blends could be achieved. The photographs of SEM analysis indicate that the interface action of PA66 and polyethylene is enhanced by compatibilizer HDPE-g-GMA.

Sign in / Sign up

Export Citation Format

Share Document