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ITS » Scientific Articles » Luar ITS
Posted by nurkhamidah@chem-eng.its.ac.id at 28/05/2013 14:42:26  •  535 Views


EFFECTS OF STEREOCOMPLEX NUCLEI OR SPHERULITES ON CRYSTALLINE MORPHOLOGY AND CRACK BEHAVIOR OF POLYL-LACTIC ACID

Author :
NURKHAMIDAH, SITI ( 198405082009122004 )
WOO, EAMOR.M




ABSTRAK

Introduction of sc-PLA crystals as small nuclei or large sc-PLA spherulites has great influence on patterning the inter-phase boundaries and reducing the cracks in crystallized PLLA in mixtures with PDLA. Unmelted sc-PLA crystals as nuclei induce cracks in later-crystallized PLLA whereas co-crystallization of PLLA with PDLA to develop simultaneous PLLA and sc-PLA spherulites is effective in altering the inter-phases for minimizing the cracks. PLLA cocrystallized with sc-PLA spherulites tends to be more compact than PLLA spherulites crystallizing on sc-PLA nuclei. In general the sc-PLA spherulites suppress the occurrence of a stressed interphase in PLLA spherulites and the depth of cooling-induced cracks is also decreased.



Keywordscracks; nucleation; PLLA; spherulites; stereocomplexes
 
Subject:  Crystalline
Date Create: 28/05/2013
Type: Text
Format: PDF
Language: English
Identifier: ITS-Article-23105130000669
Collection ID: 23105130000669
Call Number: 541.39 Nur e


Source
article of Macromol. Chem. Phys. 2011, 212, 16631670

Coverage
ITS Community

Rights
2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim




[ Download - Summary ]

ITS-Article-23105130000669-25277.pdf



[ Link of Contents]
  1. EFFECTS OF STEREOCOMPLEX NUCLEI OR SPHERULITES ON CRYSTALLINE MORPHOLOGY AND CRACK BEHAVIOR OF POLY(L-LACTIC ACID)
    http://onlinelibrary.wiley.com/doi/10.1002/macp.201100207/abstract?



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