Effect of cellulose nanocrystal polymorphs on mechanical, barrier and thermal properties of poly(lactic acid) based bionanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60426-60440 ◽  
Author(s):  
Prodyut Dhar ◽  
Debashis Tarafder ◽  
Amit Kumar ◽  
Vimal Katiyar
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Cellulose Nanocrystals ◽  
Cellulose Nanocrystal ◽  
Poly Lactic Acid ◽  
Bamboo Pulp ◽  
Mechanical Barrier

Cellulose nanocrystals (CNCs) using different cellulose polymorphs have been fabricated from raw bamboo pulp. Their structural and morphological effects on the mechanical, barrier and thermal properties of poly(lactic acid) have been investigated.

Melt free radical grafting of glycidyl methacrylate (GMA) onto fully biodegradable poly(lactic) acid films: effect of cellulose nanocrystals and a masterbatch process

RSC Advances ◽  
2015 ◽  
Vol 5 (41) ◽  
pp. 32350-32357 ◽  
Author(s):  
Weijun Yang ◽  
Franco Dominici ◽  
Elena Fortunati ◽  
José M. Kenny ◽  
Debora Puglia
Keyword(s):  
Lactic Acid ◽  
Free Radical ◽  
Cellulose Nanocrystals ◽  
Glycidyl Methacrylate ◽  
Cellulose Nanocrystal ◽  
Poly Lactic Acid ◽  
Biodegradable Poly

This article reports the preparation, by means of a masterbatch procedure, of poly (lactic acid) (PLA)/cellulose nanocrystal (CNC) films via premixing 1% wt of CNC into PLA or glycidyl methacrylate (GMA) grafted PLA (g-PLA).

Mechanical, barrier, and thermal properties of poly(lactic acid)/poly(trimethylene carbonate)/talc composite films

2013 ◽  
Vol 131 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Yuyue Qin ◽  
Jiyi Yang ◽  
Minglong Yuan ◽  
Jing Xue ◽  
Jianxin Chao ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Composite Films ◽  
Poly Lactic Acid ◽  
Trimethylene Carbonate ◽  
Mechanical Barrier

Mechanical and thermal properties of toluene diisocyanate-modified cellulose nanocrystal nanocomposites using semi-crystalline poly(lactic acid) as a base matrix

RSC Advances ◽  
2016 ◽  
Vol 6 (77) ◽  
pp. 73879-73886 ◽  
Author(s):  
Jae-Gyoung Gwon ◽  
Hye-Jung Cho ◽  
Sang-Jin Chun ◽  
Soo Lee ◽  
Qinglin Wu ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Cellulose Nanocrystal ◽  
Toluene Diisocyanate ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Chemical Modifications ◽  
Base Matrix ◽  
Modified Cellulose

Although chemical modifications of CNCs have been successfully adopted to enhance their dispersibility in apolar matrices and solvents, the problem of the dispersion level of mCNCs in apolar matrices above a certain loading of nanoparticles remains an issue.

scholarly journals Bamboo Fiber Based Cellulose Nanocrystals/Poly(Lactic Acid)/Poly(Butylene Succinate) Nanocomposites: Morphological, Mechanical and Thermal Properties

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1076
Author(s):  
Masrat Rasheed ◽  
Mohammad Jawaid ◽  
Bisma Parveez
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Cellulose Nanocrystals ◽  
Natural Fiber ◽  
Testing Machine ◽  
Bamboo Fiber ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Melt Mixing ◽  
Butylene Succinate

The purpose of this work was to investigate the effect of cellulose nanocrystals (CNC) from bamboo fiber on the properties of poly (lactic acid) (PLA)/poly (butylene succinate) (PBS) composites fabricated by melt mixing at 175 °C and then hot pressing at 180 °C. PBS and CNC (0.5, 0.75, 1, 1.5 wt.%) were added to improvise the properties of PLA. The morphological, physiochemical and crystallinity properties of nanocomposites were analysed by field emission scanning electron microscope (FESEM), Fourier-transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD), respectively. The thermal and tensile properties were analysed by thermogravimetic analysis (TGA), Differential scanning calorimetry (DSC) and Universal testing machine (UTM). PLA-PBS blend shows homogeneous morphology while the composite shows rod-like CNC particles, which are embedded in the polymer matrix. The uniform distribution of CNC particles in the nanocomposites improves their thermal stability, tensile strength and tensile modulus up to 1 wt.%; however, their elongation at break decreases. Thus, CNC addition in PLA-PBS matrix improves structural and thermal properties of the composite. The composite, thus developed, using CNC (a natural fiber) and PLA-PBS (biodegradable polymers) could be of immense importance as they could allow complete degradation in soil, making it a potential alternative material to existing packaging materials in the market that could be environment friendly.

Thermal properties enhancement of poly(lactic acid) by corn cob cellulose nanocrystals

2019 ◽  
Vol 10 (4) ◽  
pp. 63-76
Author(s):  
Wei Keat Ng ◽  
Wen Shyang Chow ◽  
Hanafi Ismail
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Thermal Properties ◽  
Zeta Potential ◽  
Acid Hydrolysis ◽  
Cellulose Nanocrystals ◽  
Agricultural Waste ◽  
Poly Lactic Acid ◽  
Corn Cob ◽  
Thermal Stability Of

Cellulose nanocrystals were extracted from agricultural waste corn cob using acid hydrolysis followed by freeze drying. Poly(lactic acid)/corn cob cellulose nanocrystals (PLA/CCNC) composites were prepared using solvent casting. The properties of CCNC were characterized using transmission electron microscope (TEM), zeta potential analyzer, and thermogravimetric analyzer (TGA). The effects of CCNC on the thermal properties of PLA were examined using differential scanning calorimetry (DSC) and TGA. From the SEM and TEM results, the irregular shaped and micron-sized corn cob powder was transformed to needle-like shaped nanocellulose (aspect ratio approximately 30.80) after the acid hydrolysis process. TGA results show that the thermal stability of CCNC is higher than that of corn cob powder. The zeta potential of CCNC is −24.6 mV, which indicates there is a repulsion force between the individual CCNC and making them disperse uniformly and stable in aqueous media. DSC and TGA results show that the crystallinity and thermal stability of PLA were increased by the incorporation of CCNC. This demonstrates that the CCNC is a potential bio-nanofiller with good thermal stability and nucleating-ability for PLA.

Sign in / Sign up

Export Citation Format

Share Document