Citation: Yang Minrui, Chen Weixing, Luo Chunyan, Tang Feng, Yang Jingjing. Effect of Graft Modified POSS on the Crystallization Behavior of PLLA[J]. Chemistry, ;2018, 81(10): 951-956. shu

Effect of Graft Modified POSS on the Crystallization Behavior of PLLA

School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021

Corresponding author: Chen Weixing, chenwx@xatu.edu.cn
Received Date: 24 May 2018
Accepted Date: 5 July 2018

Figures(8)

The aminopropylisobutyl polyhedral oligomeric silsesquioxane (POSS-NH₂), POSS grafted polyethylene glycol (POSS-PEG) and POSS grafted poly(lactic acid) (POSS-g-PLLA) were blended with poly(L-lactic acid)(PLLA) by solution blending method in dichloromethane, then the POSS-NH₂/PLLA, POSS-PEG/PLLA and POSS-g-PLLA/PLLA composites with different mass fraction of POSS were obtained. The differential scanning calorimetry (DSC) and differential polarizing microscope (POM) were used to investigate the crystallization behavior in bulk, the crystallization morphology and the growth rate of composites, respectively. The results showed that the crystallization ability of PLLA is improved by the adding of POSS-PEG with mass percentage of 1(wt)%, 5(wt)% and 10(wt)%. However, POSS-NH₂ and POSS-g-PLLA will improves the crystallization ability of PLLA when the POSS have larger mass contents (5(wt)% and 10(wt)%). Based on the POM observation, it can be found that addition of POSS-PEG promotes the spherulite growth rate of PLLA.
- Polyhedral oligomeric silsesquioxane,
- Ploy(L-lactic acid),
- Composites,
- Thermal stability,
- Crystallization behavior
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沈阳化工大学材料科学与工程学院沈阳 110142