The shape memory properties of biodegradable chitosan/poly(l-lactide) composites

Qinghao Meng; Jinlian Hu; Kaichiu Ho; Fenglong Ji; Shaojun Chen

doi:10.1007/s10924-009-0141-z

The shape memory properties of biodegradable chitosan/poly(l-lactide) composites

Qinghao Meng, Jinlian Hu, Kaichiu Ho, Fenglong Ji, Shaojun Chen

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

46 Citations (Scopus)

Abstract

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%.

Original language	English
Pages (from-to)	212-224
Number of pages	13
Journal	Journal of Polymers and the Environment
Volume	17
Issue number	3
DOIs	https://doi.org/10.1007/s10924-009-0141-z
Publication status	Published - 1 Sept 2009

Keywords

Chitosan
Poly(l-lactide)
Shape memory property

ASJC Scopus subject areas

Environmental Engineering
Polymers and Plastics
Materials Chemistry

More information

10.1007/s10924-009-0141-z

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abstract = "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%.",

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AU - Meng, Qinghao

AU - Hu, Jinlian

AU - Ho, Kaichiu

AU - Ji, Fenglong

AU - Chen, Shaojun

PY - 2009/9/1

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N2 - 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%.

AB - 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%.

KW - Chitosan

KW - Poly(l-lactide)

KW - Shape memory property

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JO - Journal of Polymers and the Environment

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The shape memory properties of biodegradable chitosan/poly(l-lactide) composites

Abstract

Keywords

ASJC Scopus subject areas

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