Cellulose Functionalized High Molecular Weight Stereocomplex Polylactic Acid Biocomposite Films with Improved Gas Barrier, Thermomechanical Properties

2017 ◽  
Vol 5 (8) ◽  
pp. 6835-6844 ◽  
Author(s):  
Arvind Gupta ◽  
Vimal Katiyar
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Polylactic Acid ◽  
Thermomechanical Properties ◽  
Gas Barrier ◽  
Biocomposite Films

scholarly journals Cutinase-Like Enzyme from the Yeast Cryptococcus sp. Strain S-2 Hydrolyzes Polylactic Acid and Other Biodegradable Plastics

2005 ◽  
Vol 71 (11) ◽  
pp. 7548-7550 ◽  
Author(s):  
Kazuo Masaki ◽  
Numbi Ramudu Kamini ◽  
Hiroko Ikeda ◽  
Haruyuki Iefuji
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Polylactic Acid ◽  
Biodegradable Plastics ◽  
Remote Homology ◽  
High Molecular Weight Compound ◽  
Polybutylene Succinate

ABSTRACT A purified lipase from the yeast Cryptococcus sp. strain S-2 exhibited remote homology to proteins belonging to the cutinase family rather than to lipases. This enzyme could effectively degrade the high-molecular-weight compound polylactic acid, as well as other biodegradable plastics, including polybutylene succinate, poly (ε-caprolactone), and poly(3-hydroxybutyrate).

scholarly journals Biodegradation of high molecular weight polylactic acid

2012 ◽  
Author(s):  
Petr Stloukal ◽  
Marek Koutny ◽  
Vladimir Sedlarik ◽  
Pavel Kucharczyk
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Polylactic Acid

scholarly journals High Molecular Weight Poly(lactic acid) Synthesized with Apposite Catalytic Combination and Longer time

2018 ◽  
Vol 34 (4) ◽  
pp. 1984-1990
Author(s):  
Sanjay Kumar Singh ◽  
Prashant Anthony ◽  
Abhishek Chowdhury
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Polylactic Acid ◽  
Renewable Resources ◽  
Sulfonic Acid ◽  
Polymeric Materials ◽  
Poly Lactic Acid ◽  
Direct Polycondensation ◽  
Toluene Sulfonic Acid ◽  
Binary Catalyst

Biodegradable polymeric materials derived from renewable resources have attracted tremendous attention in different application. Polylactic acid (PLA) is one of the most useful biodegradable polymers. It is difficult to synthesize high molecular weight polylactic acid by direct polycondensation. The present work describes the synthesis of high molecular weight PLA by varying the duration of reaction and changing the sequence of catalyst addition. Binary catalyst used was SnCl2.2H2O/maleic anhydride and p-toluene sulfonic acid. PLA with molecular weight (6.503X105) was obtained in 50 hours. FTIR, H1 and 13C NMR ascertained the structure of synthesized PLA whereas GPC was used for determining molecular weight.

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