Premium
Effects of poly(ethylene glycol) grafted silica nanoparticles on crystallization behavior of poly( d ‐lactide)
Author(s) -
Wang Zuoning,
Xia Shuang,
Chen Hong,
Wang Song,
Nie Kangming,
Li Zhibo
Publication year - 2015
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4914
Subject(s) - crystallization , materials science , ethylene glycol , nanoparticle , chemical engineering , peg ratio , nanocomposite , annealing (glass) , plasticizer , polymer chemistry , solvent , lactide , polymer , copolymer , organic chemistry , chemistry , nanotechnology , composite material , finance , engineering , economics
Abstract A series of biodegradable poly( d ‐lactide) ( PDLA ) nanocomposites filled with silica nanoparticles with different surface characteristics were prepared via the solvent casting method. The crystallization behavior of PDLA was investigated at different temperatures. For these hybrid nanocomposites, the effects of silica nanoparticles displayed distinct influences on the crystallization behavior of PDLA depending on the temperature. Bare silica nanoparticles increased the crystallization behavior of PDLA regardless of annealing temperature. In contrast, poly(ethylene glycol) ( PEG ) grafted silica nanoparticles increased the crystallization rate at 80 and 130 °C, but they decreased the crystallization rate at 120 °C. A possible reason was that PEG grafted silica nanoparticles acted as plasticizers while the bare silica nanoparticles acted as nucleating agents. © 2015 Society of Chemical Industry