scholarly journals Tensile fracture behavior of a biodegradable polymer, poly(lactic acid)

2006 ◽  
Vol 25 (5) ◽  
pp. 628-634 ◽  
Author(s):  
Kazuo Arakawa ◽  
Toshio Mada ◽  
Sang-Dae Park ◽  
Mitsugu Todo
Keyword(s):  
Lactic Acid ◽  
Biodegradable Polymer ◽  
Fracture Behavior ◽  
Poly Lactic Acid ◽  
Tensile Fracture

Biodegradable polymer blends of poly(lactic acid) and poly(ethylene glycol)

1997 ◽  
Vol 66 (8) ◽  
pp. 1495-1505 ◽  
Author(s):  
Mihir Sheth ◽  
R. Ananda Kumar ◽  
Vipul Dav� ◽  
Richard A. Gross ◽  
Stephen P. McCarthy
Keyword(s):  
Lactic Acid ◽  
Ethylene Glycol ◽  
Polymer Blends ◽  
Biodegradable Polymer ◽  
Poly Lactic Acid ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Effects of Fiber Content and Alkali Treatment on the Mechanical and Morphological Properties of Poly(lactic acid)/Poly(caprolactone) Blend Jute Fiber-Filled Biodegradable Composites

2007 ◽  
Vol 1 (1) ◽  
pp. 78-86 ◽  
Author(s):  
U. S. Ishiaku ◽  
X. Y. Yang ◽  
Y. W. Leong ◽  
H. Hamada ◽  
T. Semba ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Alkali Treatment ◽  
Jute Fiber ◽  
Morphological Observation ◽  
Poly Lactic Acid ◽  
Tensile Fracture ◽  
Biodegradable Polyester ◽  
Melt Mixing ◽  
Jute Fibers ◽  
Poly Caprolactone

An attempt was made at increasing both toughness and rigidity by simultaneous toughening and reinforcement. Natural fiber-reinforced biodegradable polyester blend composites were prepared from modified and unmodified biodegradable polyesters blends with surface-treated and untreated jute fibers by melt mixing and subsequent molding. The resulting cross-linked and uncross-linked poly(lactic acid) (PLA)/poly(caprolactone) (PCL)blends were used as the biodegradable polyester matrixes. Alkali treatment was performed as the surface treatments on the jute fiber. This study revealed that alkali treatment of the jute fiber improved the mechanical properties of the composites. The addition of dicumyl peroxide (DCP) also imparted significant changes to the PLA/PCL blend as revealed by thermal and dynamic mechanical analyses. Morphological observation of the DCP modified blend revealed the existence of a third phase at the boundary region of the PLA and PCL phases that could be termed the 'interphase,' while extensive plastic deformation of the tensile fracture surface of the DCP modified blend was observed. The crystalline nature of PLA and PCL are retained in the blend, while the presence of jute fibers interferes with cold crystallization.

Biodegradability Analysis of KBF Reinforced Poly(lactic Acid) Biocomposites

2012 ◽  
Vol 576 ◽  
pp. 434-437 ◽  
Author(s):  
Maizatulnisa Othman ◽  
Ibrahim Nor Azowa ◽  
C.M. Ruzaidi ◽  
Zakaria Mohd Nazarudin ◽  
Zahurin Halim
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Tensile Fracture ◽  
Natural Soil ◽  
Tensile Fracture Surface ◽  
Soil Burial ◽  
Micropore Surface Area ◽  
Kenaf Bast ◽  
Fibre Loading ◽  
Kenaf Bast Fiber

Poly(lactic acid) (PLA) and kenaf bast fiber (KBF) were melt-blended using brabender into films in the PLA/KBF ratios of 100/0, 90/10, 70/30 and 50/50 for natural soil burial test. This formulation was used to study the biodegradability of PLA and PLA/KBF biocomposites. It was found that the decompositions of the biocomposite were faster than pure PLA. The SEM morphology of the tensile fracture surface of the 30% and 50% of PLA/KBF biocomposites presented larger pores and degradation areas than smaller KBF loading (10 wt%). This result shows that the addition of larger fibre loading to the PLA matrix increased the micropore surface area of the PLA/KBF biocomposite hence accelerated the decompositions time of the biocomposites.

scholarly journals Scale-Up of Polymerization Process of Biodegradable Polymer Poly(lactic acid) Synthesis Using Direct Polycondensation Method

2015 ◽  
Vol 3 (2) ◽  
pp. 100-109
Author(s):  
Sommai Pivsa-Art ◽  
Sumonman Niamlang ◽  
Weraporn Pivsa-Art ◽  
Nutchapon Santipatee ◽  
Tossamon Wongborh ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Biodegradable Polymer ◽  
Scale Up ◽  
Acid Synthesis ◽  
Polymerization Process ◽  
Poly Lactic Acid ◽  
Direct Polycondensation

Estimation of the Microbial Degradation of Biodegradable Polymer, Poly(lactic acid) (PLA) with a Specific Gas Production Rate

2016 ◽  
Vol 24 (5) ◽  
pp. 415-421 ◽  
Author(s):  
Jungheun Moon ◽  
Mi Yeon Kim ◽  
Bo Mi Kim ◽  
Jae Choon Lee ◽  
Myeon-Cheon Choi ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Production Rate ◽  
Microbial Degradation ◽  
Biodegradable Polymer ◽  
Gas Production ◽  
Poly Lactic Acid ◽  
Specific Gas Production Rate

Sheets of branched poly(lactic acid) obtained by one-step reactive extrusion–calendering process: physical aging and fracture behavior

2014 ◽  
Vol 49 (11) ◽  
pp. 4093-4107 ◽  
Author(s):  
J. Cailloux ◽  
O. O. Santana ◽  
E. Franco-Urquiza ◽  
J. J. Bou ◽  
F. Carrasco ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Fracture Behavior ◽  
Physical Aging ◽  
Reactive Extrusion ◽  
Poly Lactic Acid ◽  
One Step

scholarly journals Fracture behavior of quenched poly(lactic acid)

2011 ◽  
Vol 5 (1) ◽  
pp. 82-91 ◽  
Author(s):  
J. Gamez-Perez ◽  
J. C. Velazquez-Infante ◽  
E. Franco-Urquiza ◽  
P. Pages ◽  
F. Carrasco ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Fracture Behavior ◽  
Poly Lactic Acid
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