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Control of Enzymatic Degradability of Biodegradable Polylactide by Blending with Non-degradable Polymers
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 Title & Authors
Control of Enzymatic Degradability of Biodegradable Polylactide by Blending with Non-degradable Polymers
Jang, Seong-Ho; Park, Sang-Bo; Lee, Won-Ki;
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 Abstract
The effects of addition of non degradable polymers, polystyrene (PS) and poly(methyl methacrylate) (PMMA) on the rate of enzymatic degradation of biodegradable poly(l-lactide) (PLLA) have been studied in term of surface structure. Since a component in multicomponent polymeric system has shown surface enrichment, PS and PMMA which have lower surface energy than PLLA were selected as a minor blend component (5 wt%). Enzymatic degradation was carried out at and pH 8.5 in the aqueous solution of Proteinase K. Two blend systems, partially miscible (PS/PLLA) and immiscible (PMMA/PLLA), showed the surface enrichment of 4 and 2 times of PS and PMMA, respectively. From the weight loss profile data, the slow degradation rate of both blend films was observed. This indicates that PS or PMMA domains which exist at surface act as a retardant of enzymatic attack.
 Keywords
Poly(l-lactide);Enzymatic degradation;Blend;Surface enrichment;Retardent;
 Language
Korean
 Cited by
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광학이성질체를 이용한 폴리락타이드 혼합물의 가수분해성 조절,이원기;

폴리머, 2012. vol.36. 3, pp.309-314 crossref(new window)
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