Effects of the chain-extender content on the structure and performance of poly(lactic acid)-poly(butylene succinate)-microcrystalline cellulose composites

2017 ◽  
Vol 134 (22) ◽  
Author(s):  
Zheng Cao ◽  
Ying Lu ◽  
Cheng Zhang ◽  
Qian Zhang ◽  
An Zhou ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Microcrystalline Cellulose ◽  
Chain Extender ◽  
Poly Lactic Acid ◽  
Butylene Succinate ◽  
Cellulose Composites ◽  
And Performance

scholarly journals Morphology, Structural, Thermal, and Tensile Properties of Bamboo Microcrystalline Cellulose/Poly(Lactic Acid)/Poly(Butylene Succinate) Composites

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 465
Author(s):  
Masrat Rasheed ◽  
Mohammad Jawaid ◽  
Bisma Parveez ◽  
Aamir Hussain Bhat ◽  
Salman Alamery
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Lactic Acid ◽  
Tensile Properties ◽  
Microcrystalline Cellulose ◽  
Poly Lactic Acid ◽  
Melt Mixing ◽  
Butylene Succinate ◽  
Uniform Dispersion ◽  
Scanning Electron

The present study aims to develop a biodegradable polymer blend that is environmentally friendly and has comparable tensile and thermal properties with synthetic plastics. In this work, microcrystalline cellulose (MCC) extracted from bamboo-chips-reinforced poly (lactic acid) (PLA) and poly (butylene succinate) (PBS) blend composites were fabricated by melt-mixing at 180 °C and then hot pressing at 180 °C. PBS and MCC (0.5, 1, 1.5 wt%) were added to improve the brittle nature of PLA. Field emission scanning electron microscopy (FESEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscope (FTIR), thermogravimetric analysis (TGA), differential thermogravimetry (DTG), differential scanning calorimetry (DSC)), and universal testing machine were used to analyze morphology, crystallinity, physiochemical, thermal, and tensile properties, respectively. The thermal stability of the PLA-PBS blends enhanced on addition of MCC up to 1wt % due to their uniform dispersion in the polymer matrix. Tensile properties declined on addition of PBS and increased with MCC above (0.5 wt%) however except elongation at break increased on addition of PBS then decreased insignificantly on addition of MCC. Thus, PBS and MCC addition in PLA matrix decreases the brittleness, making it a potential contender that could be considered to replace plastics that are used for food packaging.

Structure and performance of poly(lactic acid)/poly(butylene succinate-co-L-lactate) blend reinforced with rice husk and coconut shell filler

2020 ◽  
pp. 096739112095404
Author(s):  
John Olabode Akindoyo ◽  
Nur Atikah Aliah binti Husney ◽  
Nurul Hidayah Ismail ◽  
Mustapha Mariatti
Keyword(s):  
Lactic Acid ◽  
Water Absorption ◽  
Rice Husk ◽  
Crystallinity Index ◽  
Filler Loading ◽  
Coconut Shell ◽  
Poly Lactic Acid ◽  
Comparative Performance ◽  
Butylene Succinate ◽  
And Performance

Reinforced poly(lactic acid) (PLA) and poly(butylene succinate- co-L-lactate) (PBSL) blend was prepared. Two different fillers namely coconut shell (CS) and rice husk (RH) were used as reinforcement for the PLA-PBSL blend at different filler content (0–10 wt%) and their effects on the blend was investigated. Tensile test results showed that 7.5 wt% filler is the optimum filler loading for both filler types. The comparative performance of composites prepared using the optimum filler loading was further investigated. At the same filler loading, CS performs better than RH in terms of strength, crystallization, and water absorption properties of the blends. Specifically, the tensile strength of CS reinforced blend increased by 195% compared to RH (145%). Likewise, the CS blend has a crystallinity index ( X DSC) of 52% compared to 45% of RH which aligns with observations from the X-ray diffraction analysis. However, thermogravimetric analysis revealed that RH reinforced blend is more thermally stable than CS reinforced blends. This study reveals that the two fillers can desirably enhance the performance of PLA/PBSL blends, especially to produce environmentally friendly products. However, CS could offer better performance over RH especially where better mechanical strength, improved crystallization and low water absorption are desired.

Poly(Lactic Acid)/Poly(Butylene Succinate) Blends Filled with Epoxy Functionalised Polymeric Chain Extender

2013 ◽  
Vol 664 ◽  
pp. 644-648 ◽  
Author(s):  
Phasawat Chaiwutthinan ◽  
Thanawadee Leejarkpai ◽  
Dujreutai Pongkao Kashima ◽  
Saowaroj Chuayjuljit
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Tensile Modulus ◽  
Chain Extender ◽  
Poly Lactic Acid ◽  
Polymeric Chain ◽  
Dependent Manner ◽  
Butylene Succinate ◽  
Elongation At Break ◽  
Two Stages

In this work, biodegradable plastics were produced from different poly(lactic acid) (PLA)/ poly(butylene succinate) (PBS) blend ratios in the presence of a fix loading (1 phr) of a commercial epoxy functionalised polymeric chain extender (Joncryl ADR-4300-S). The effects of blend ratio and chain extender on the tensile properties, thermal stability and morphology were investigated by the tensile testing, thermogravimetric analysis (TGA) and scanning electron microscopy, respectively. The results show that the incorporation of PBS and Joncryl into PLA apparently reduced the tensile strength and tensile modulus, but increased the elongation at break of the blends in a dose-dependent manner. However, their blends provide interesting materials for industrial packaging applications, due to their enhanced ductility by decreasing the tensile modulus and increasing the elongation at break. TGA analysis showed that thermal stability of the blends was lower than that of the pure PLA and PBS. Moreover, the chain-extended products exhibit two stages of thermal decomposition, the first was due to the degradation of PBS, and the second was due to the degradation of PLA.

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