Effects of shear on epitaxial crystallization of poly(epsilon-caprolactone) on reduced graphene oxide
Wu, F; Jiang, LB; Miao, WJ; Duan, TC; An, MF; Tian, F; Wang, ZB
2018
发表期刊RSC ADVANCES
ISSN2046-2069
卷号8期号:12页码:6406-6413
文章类型期刊论文
摘要Epitaxial crystallization of poly(epsilon-caprolactone) (PCL) on reduced graphene oxide (RGO) was investigated by shearing at different shear rates of 3 s(-1) and 75 s(-1) and different shear temperatures of 65 degrees C, 70 degrees C and 75 degrees C, respectively. Two dimensional wide angle X-ray diffraction (2D WAXD) results show that the crystallinity and the orientation degrees of the (110) plane of PCL/RGO nanocomposites with shear are higher than those without shear, but the imposed shear field has no obvious effect on the crystal structure of the PCL matrix. Two dimensional small angle X-ray scattering (2D SAXS) results suggest that the imposed shear field makes PCL chains epitaxially crystallize on RGO surfaces to form thicker lamellae. Thereby the melt points of PCL/RGO nanocomposites with shear are higher than that without shear from the differential scanning calorimetry (DSC) results. These results indicate that the imposed shear field can enhance the orientation of the PCL matrix, and promote epitaxial crystallization of PCL chains on RGO surfaces. Higher shear temperature is the requirement for PCL chains to epitaxially crystallize well on RGO at low shear rate, although it is not required for the samples at high shear rate.
关键词Oriented Isotactic Polypropylene X-ray-scattering Situ Small-angle Mechanical-properties Semicrystalline Polymers Induced Orientation Graphite Oxide Nanocomposites Composites Morphology
DOI10.1039/c7ra13442h
收录类别SCI
语种英语
WOS记录号WOS:000425034000027
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28986
专题中科院上海应用物理研究所2011-2018年
作者单位1.Wu, F
2.Jiang, LB
3.Miao, WJ
4.Duan, TC
5.An, MF
6.Tian, F
7.Wang, ZB
推荐引用方式
GB/T 7714
Wu, F,Jiang, LB,Miao, WJ,et al. Effects of shear on epitaxial crystallization of poly(epsilon-caprolactone) on reduced graphene oxide[J]. RSC ADVANCES,2018,8(12):6406-6413.
APA Wu, F.,Jiang, LB.,Miao, WJ.,Duan, TC.,An, MF.,...&Wang, ZB.(2018).Effects of shear on epitaxial crystallization of poly(epsilon-caprolactone) on reduced graphene oxide.RSC ADVANCES,8(12),6406-6413.
MLA Wu, F,et al."Effects of shear on epitaxial crystallization of poly(epsilon-caprolactone) on reduced graphene oxide".RSC ADVANCES 8.12(2018):6406-6413.
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