期刊
PLASTICS RUBBER AND COMPOSITES
卷 45, 期 6, 页码 261-269出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14658011.2016.1183297
关键词
Crosslinking; Poly (butylene succinate); Reactive extrusion; Properties
资金
- Specialised Research Fund for the Doctoral Program of Higher Education [20120172130004]
- National Natural Science Foundation of China-Guangdong Joint Fundation Project [U1201242]
- 973 Program [2012CB025902]
- Program for the Fundamental Research Funds for the Central Universities [2014ZB0021]
- Special-funded Program on National Key Scientific Instruments and Equipment Development of China [2012YQ230043]
In this study, crosslinked poly (butylene succinate) (PBS) was prepared successfully by the reactions of the end hydroxyl groups of PBS with the isocyanate groups of hexamethylene diisocyanate prepolymer (HDIP) using a vane extruder (VE) followed by compression moulding. Torque and gel permeation chromatography showed that the PBS was successfully corsslinked by HDIP. The effects of varied HDIP on properties such as mechanical, thermal properties, and capillary rheological behaviours were also evaluated. The results indicated that HDIP crosslinked PBS with high efficiency. The gel fraction of the crosslinked PBS increased to 57% with the 1.5 wt-% HDIP loading. Differential scanning calorimetry revealed that the cross-link points in the crosslinked samples act as crystal nuclei and the crystallisation temperature increase. Dynamic mechanical analysis revealed that the glass transition temperature (Tg) increased with increase in gel fraction. This may be caused by the reduced molecular chain mobility for corsslinked samples. The capillary rheological properties showed that all samples exhibit non-Newtonian and shear thinning characteristics in the range of applied shear rates, and the apparent viscosity increased with the HDIP content. What's more, the crosslinked PBS also showed improved mechanical properties and thermal stability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据