文献类型：期刊文献

英文题名：Simultaneous enhancements of mechanical properties and hydrophilic properties of polypropylene via nano-silicon dioxide modified by polydopamine

作者：Qiu, Zhoutong[1];Wang, Jikui[1,2];Yang, Kun[1];Guo, Jiahong[1];Wang, Wenqi[1];Pan, Renjie[1];Wu, Genhua[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Preparat & Applicat Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Collaborat Innovat Ctr Petrochem New Mat, Anqing 246011, Anhui, Peoples R China

年份：2017

卷号：134

期号：26

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20171003419010);WOS:【SCI-EXPANDED(收录号:WOS:000398890900016)】；

基金：The authors sincerely acknowledge "Shanghai Collaboration Program (CXY-2014-023)," "Scientific and Technological Achievements Transformation Program of Jiangsu Province (SBA2014010034)," and "Ningbo Industrial Key Projects (201601ZD-A01026)."

语种：英文

外文关键词：blending modification; mechanical and hydrophilic properties; polypropylene (PP); SiO2@polydopamine; synergistic effect

摘要：This study is focused on the development of high-performance composite materials based on nano silicon dioxide (nano-SiO2) modified by polydopamine (PDA). A facile one-step method was developed to synthesize core-shell structured SiO2@polydopamine (PDA) nanospheres. During the synthesis, a PDA shell was simultaneously coated on the SiO2 nanospheres to form the core-shell nanostructure which was blended with polypropylene (PP) and nucleating agent (-NA) to enhance both mechanical and hydrophilic properties. Nano-SiO2 particles modified by PDA (SiO2@polydopamine) influence the crystallization of PP seriously. The results indicated that when 1%wt SiO2@polydopamine was added, the impact strength of composite reached the maximum value 12.60k J/m(2) increasing 137% compared with PP, the bending strength and bending modulus decreased slightly reaching 41.85 MPa, and 2192 MPa, respectively, the composite possessed hydrophilic performance with the water contact angle of 88.32 degrees. nucleating agent was used in all formulations, the synergistic effect toward mechanical properties with SiO2@polydopamine was studied. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45004.