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Modification of polycarbonate by adding poly( L ‐lactide)
Author(s) -
Wang Yonghong,
Shi Yunyun,
Yang Jinghui,
Huang Ting,
Zhang Nan,
Wang Yong
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.37766
Subject(s) - materials science , polycarbonate , differential scanning calorimetry , extrusion , composite material , heat deflection temperature , scanning electron microscope , crystallization , lactide , amorphous solid , molding (decorative) , polymer , polymer chemistry , copolymer , chemical engineering , izod impact strength test , crystallography , chemistry , physics , ultimate tensile strength , engineering , thermodynamics
In this study, the blend of polycarbonate (PC)/poly(L‐lactide) (PLLA) (70/30) was prepared through the conventional extrusion‐injection‐molding process. The morphology of the blend was characterized using scanning electron microscope. Both differential scanning calorimetry and wide angle X‐ray diffraction were used to investigate the crystallization behavior of PLLA component in the blend. The mechanical and thermal properties of the blend were comparatively investigated, and the hydrolytic degradation ability of the material was also evaluated. The results show that the dispersed‐PLLA particles are in the amorphous state in the PC matrix. Although the blend is immiscible, the rigid PLLA particles exhibit the toughening and reinforcement effects on PC simultaneously. Specifically, the heat‐distortion temperature of the blend is comparable to that of pure PC. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013