Ageing of different biodegradable polyesters blends mechanical and hygrothermal behavior

被引：34

作者：

Berthe, V. ^{[1
]}

Ferry, L. ^{[1
]}

Benezet, J. C. ^{[1
]}

Bergeret, A. ^{[1
]}

机构：

[1] Ecole Mines Ales, Ctr Mat Grande Diffus, F-30319 Ales, France

来源：

POLYMER DEGRADATION AND STABILITY | 2010年 / 95卷 / 03期

关键词：

Polylactide; Poly-epsilon-caprolactone; Melt blending; Swelling behavior; Hygrothermal ageing; SOLUTION-CAST BLENDS; POLY(LACTIC ACID); ALIPHATIC POLYESTERS; POLYMER BLENDS; HYDROLYTIC DEGRADATION; ENZYMATIC DEGRADATION; POLY(ETHYLENE GLYCOL); POLY(DL-LACTIC ACID); PHYSICAL-PROPERTIES; PHASE MORPHOLOGY;

D O I：

10.1016/j.polymdegradstab.2009.11.008

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The aim of this study is to better understand the performance of binary blends of biodegradable polyesters when exposed to hygrothermal ageing, in order to overcome some of their limitations such as water resistance For this, blends have been prepared by extrusion using two P(L)LA (L-poly-(lactic acid)) of different molecular weights and P epsilon CL (poly-epsilon-caprolactone) Mechanical properties over ageing are reported and compared to pure P((L)LA Blending P epsilon CL to P(L)LA allowed to improve P(L)LA initial resilience During ageing, crystallinity increase seemed to lower water uptake at short ageing times, while osmotic cracking Was found to possibly occur in pure P(L)LA for long ageing times, thus increasing water uptake. Besides, P(L)LA/P epsilon CL blends water Uptake remained constant over ageing. Finally, while P(L)LA resilience decrease Could be related to chain scission, blend aptitude to elongation decrease was related to interphase decohesion, at long ageing times Results showed P(L)LA Molecular weight influence on both initial mechanical properties and water uptake. (c) 2009 Elsevier Ltd All rights reserved.

引用

页码：262 / 269

页数：8

共 56 条

[1]

Amass W, 1998, POLYM INT, V47, P89, DOI 10.1002/(SICI)1097-0126(1998100)47:2<89::AID-PI86>3.0.CO

[2]

2-F

[3] Toughening polylactide [J].

Anderson, Kelly S. ;

Schreck, Kathleen M. ;

Hillmyer, Marc A. .

POLYMER REVIEWS, 2008, 48 (01) :85-108

[4] The influence of block copolymer microstructure on the toughness of compatibilized polylactide/polyethylene blends [J].

Anderson, KS ;

Hillmyer, MA .

POLYMER, 2004, 45 (26) :8809-8823

[5] Toughening of polylactide by melt blending with linear low-density polyethylene [J].

Anderson, KS ;

Lim, SH ;

Hillmyer, MA .

JOURNAL OF APPLIED POLYMER SCIENCE, 2003, 89 (14) :3757-3768

[6]

[Anonymous], 2005, BIODEGRADABLE POLYM, DOI DOI 10.1201/9781439823699

[7]

Avérous L, 2008, MONOMERS, POLYMERS AND COMPOSITES FROM RENEWABLE RESOURCES, P433, DOI 10.1016/B978-0-08-045316-3.00021-1

[8]

Bastioli C., 2005, Handbook of biodegradable polymers

[9] Structure and mechanical properties of poly(D,L-lactic acid)/poly(ε-caprolactone) blends [J].

Broz, ME ;

VanderHart, DL ;

Washburn, NR .

BIOMATERIALS, 2003, 24 (23) :4181-4190

[10] Preparation and characterization of biodegradable PLA polymeric blends [J].

Chen, CC ;

Chueh, JY ;

Tseng, H ;

Huang, HM ;

Lee, SY .

BIOMATERIALS, 2003, 24 (07) :1167-1173

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