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Effect of particle size and surface modification on mechanical properties of poly( para ‐dioxanone)/inorganic particles
Author(s) -
Bai Yang,
Ma Chi,
Wang Pingquan,
Fan Zhou,
Bai Wei,
Xiong Chengdong,
Tang Congming
Publication year - 2012
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22303
Subject(s) - crystallinity , materials science , whisker , nucleation , crystallization , particle size , composite material , ultimate tensile strength , adhesion , particle (ecology) , morphology (biology) , surface modification , silane , chemical engineering , chemistry , organic chemistry , oceanography , biology , engineering , genetics , geology
Poly( para ‐dioxanone) (PPDO)‐based composites have been prepared by blending PPDO with three different types of CaCO 3 particles, CC1 (nano‐CaCO 3 ), CC2 (CaCO 3 whisker), and CC3 (silane‐coated CaCO 3 whisker). The effects of particles size, interface adhesion, and crystallinity of composites on mechanical properties were discovered through analysis of the morphology of fracture surfaces, thermal characteristics, and crystalline structure. DSC revealed that the CaCO 3 particles acted as a nucleating agent and promoted crystallinity of PPDO. The effect of CaCO 3 particles on crystallization of PPDO was clearly revealed by using the nucleating efficiency. Smaller size particles exhibit greater nucleating efficiency. Adhesion between PPDO and the CaCO 3 particles plays major roles on the mechanical properties of composites. The tensile strength of PPDO was improved over 54%. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers