Morphology, structure, and properties of poly(lactic acid) microporous films containing poly(butylene terephthalate) fine fibers fabricated by biaxial stretching

2014 ◽  
Vol 132 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chavakorn Samthong ◽  
Jiraporn Seemork ◽  
Shogo Nobukawa ◽  
Masayuki Yamaguchi ◽  
Piyasan Praserthdam ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Structure And Properties ◽  
Butylene Terephthalate ◽  
Biaxial Stretching ◽  
Microporous Films

Stretch-induced crystalline structural evolution and cavitation of poly(butylene adipate-ran-butylene terephthalate)/poly(lactic acid) immiscible blends

Polymer ◽  
2020 ◽  
Vol 188 ◽  
pp. 122121 ◽  
Author(s):  
Jian Zhou ◽  
Ying Zheng ◽  
Guorong Shan ◽  
Yongzhong Bao ◽  
Wen-Jun Wang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Structural Evolution ◽  
Poly Lactic Acid ◽  
Butylene Terephthalate ◽  
Immiscible Blends

scholarly journals Investigation on compatibility of PLA/PBAT blends modified by epoxy-terminated branched polymers through chemical micro-crosslinking

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 39-54 ◽  
Author(s):  
Bo Wang ◽  
Yujuan Jin ◽  
Kai’er Kang ◽  
Nan Yang ◽  
Yunxuan Weng ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Glass Transition ◽  
Sem Analysis ◽  
Branched Polymers ◽  
Poly Lactic Acid ◽  
Elongation At Break ◽  
Butylene Terephthalate ◽  
The Difference ◽  
Physical And Chemical ◽  
The Impact

AbstractIn this study, a type of epoxy-terminated branched polymer (ETBP) was used as an interface compati- bilizer to modify the poly lactic acid (PLA)/poly(butylene adipate-co-butylene terephthalate) (PBAT) (70/30) blends. Upon addition of ETBP, the difference in glass transition temperature between PLA and PBAT became smaller. By adding 3.0 phr of ETBP, the elongation at break of the PLA/PBAT blends was found increased from 45.8% to 272.0%; the impact strength increased from 26.2 kJ·m−2 to 45.3 kJ·m−2. In SEM analysis, it was observed that the size of the dispersed PBAT particle decreased with the increasing of ETBP content. These results indicated that the compatibility between PLA and PBAT can be effectively enhanced by using ETBP as the modifier. The modification mechanism was discussed in detail. It proposes that both physical and chemical micro-crosslinking were formed, the latter of which was confirmed by gel content analysis.

Structure and properties of quaternary fulvic acid–intercalated saponite/poly(lactic acid) nanocomposites

2015 ◽  
Vol 109-110 ◽  
pp. 136-142 ◽  
Author(s):  
Wentao Wang ◽  
Weijun Zhen ◽  
Shengzhen Bian ◽  
Xi Xi
Keyword(s):  
Lactic Acid ◽  
Fulvic Acid ◽  
Poly Lactic Acid ◽  
Structure And Properties

Effect of Biaxial Stretching on Thermal Properties, Shrinkage and Mechanical Properties of Poly (Lactic Acid) Films

2012 ◽  
Vol 21 (1) ◽  
pp. 303-311 ◽  
Author(s):  
Jyh-Horng Wu ◽  
Ming-Shien Yen ◽  
Chien-Pang Wu ◽  
Chia-Hao Li ◽  
M. C. Kuo
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Thermal Properties ◽  
Poly Lactic Acid ◽  
Biaxial Stretching

scholarly journals Biodegradation Behavior of Poly(Butylene Adipate-Co-Terephthalate) (PBAT), Poly(Lactic Acid) (PLA), and Their Blend in Freshwater with Sediment

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3946
Author(s):  
Ye Fu ◽  
Gang Wu ◽  
Xinchao Bian ◽  
Jianbing Zeng ◽  
Yunxuan Weng
Keyword(s):  
Molecular Structure ◽  
Molecular Weight ◽  
Lactic Acid ◽  
Chemical Structure ◽  
Gel Permeation Chromatography ◽  
Poly Lactic Acid ◽  
Relative Peak Area ◽  
Butylene Terephthalate ◽  
Aggregation Structure ◽  
Gel Permeation

Poly(butylene adipate-co-terephthalate) (PBAT) and poly(lactic acid) (PLA) are well-known biodegadable polyesters due to their outstanding performance. The biodegradation behavior of PLA/PBAT blends in freshwater with sediment is investigated in this study by analyzing the appearance, chemical structure and aggregation structure of their degraded residues via SEM, TG, DSC, gel permeation chromatography (GPC) and XPS. The effect of aggregation structure, hydrophilia and biodegradation mechanisms of PBAT and PLA on the biodegradability of PLA/PBAT blends is illuminated in this work. After biodegradation, the butylene terephthalate unit in the molecular structure of the components and the molecular weight of PLA/PBAT blends decreased, while the content of C-O bond in the composites increased, indicating that the samples indeed degraded. After 24 months of degradation, the increase in the relative peak area proportion of C-O to C=O in PLA/PBAT-25, PLA/PBAT-50 and PLA/PBAT-75 was 62%, 46% and 68%, respectively. The biodegradation rates of PBAT and PLA in the PLA/PBAT blend were lower than those for the respective single polymers.

scholarly journals Influence of clay-nanofiller geometry on the structure and properties of poly(lactic acid)/thermoplastic polyurethane nanocomposites

RSC Advances ◽  
2016 ◽  
Vol 6 (36) ◽  
pp. 30755-30762 ◽  
Author(s):  
I. Kelnar ◽  
J. Kratochvíl ◽  
I. Fortelný ◽  
L. Kaprálková ◽  
A. Zhigunov ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermoplastic Polyurethane ◽  
Polymer System ◽  
Poly Lactic Acid ◽  
Structure And Properties ◽  
Complex Effect ◽  
Polyurethane Nanocomposites

The complex effect of platy and tubular nanofillers on the performance of a biodegradable multiphase polymer system is presented.

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