The Shape Memory Properties of Biodegradable Chitosan/Poly(l-lactide) Composites

The shape memory behavior of PLLA (poly( l -lactide)) and chitosan/PLLA composites was studied. PLLA and chitosan were compounded to fabricate novel materials which may have biodegradability and biocompatibility. Chitosan does not significantly affect the glass and melting transition temperature of...

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Published in:Journal of polymers and the environment 2009-09, Vol.17 (3), p.212-224
Main Authors: Meng, Qinghao, Hu, Jinlian, Ho, KaiChiu, Ji, Fenglong, Chen, Shaojun
Format: Article
Language:English
Subjects:
Biodegradable materials
Biodegradation
Biophysics
Chemistry
Chemistry and Materials Science
Composite materials
Environmental Chemistry
Environmental Engineering/Biotechnology
Industrial Chemistry/Chemical Engineering
Materials Science
Original Paper
Polymer Sciences
Polymers
Transition temperatures
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cited_by cdi_FETCH-LOGICAL-c484t-fcb763139b00daafa13785d03a86ac20c0769c5b3a1c16cd29318d2a3bc522423
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description The shape memory behavior of PLLA (poly( l -lactide)) and chitosan/PLLA composites was studied. PLLA and chitosan were compounded to fabricate novel materials which may have biodegradability and biocompatibility. Chitosan does not significantly affect the glass and melting transition temperature of the PLLA. Both the pure PLLA and chitosan/PLLA composites showed shape memory effect arising from the viscoelastic properties of PLLA comprised of semi crystalline structures. The shape recovery ratio of the chitosan/PLLA composites decreased significantly with increasing chitosan contents due to the incompatibility between PLLA and chitosan. Phase separation structures of the composites were observed by using atomic force microscopy. To obtain good shape memory effect, the chitosan content should be below 15 wt%.
doi_str_mv 10.1007/s10924-009-0141-z
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subjects Biodegradable materials
Biodegradation
Biophysics
Chemistry
Chemistry and Materials Science
Composite materials
Environmental Chemistry
Environmental Engineering/Biotechnology
Industrial Chemistry/Chemical Engineering
Materials Science
Original Paper
Polymer Sciences
Polymers
Transition temperatures
title The Shape Memory Properties of Biodegradable Chitosan/Poly(l-lactide) Composites
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