文献类型：期刊文献

英文题名：Dynamic Postpolymerization of 3D-Printed Photopolymer Nanocomposites: Effect of Cellulose Nanocrystal and Postcure Temperature

作者：Yang, Zhaozhe[1,2] Wu, Guomin[3] Wang, Siqun[4] Xu, Min[1] Feng, Xinhao[1,4]

第一作者：Yang, Zhaozhe

通信作者：Xu, M[1];Feng, XH[1];Wang, SQ[2];Feng, XH[2]

机构：[1]Northeast Forestry Univ, Coll Mat Sci & Engn, Minist Educ, Key Lab Biobased Mat Sci & Technol, Harbin 150040, Heilongjiang, Peoples R China;[2]Univ Laval, Dept Chem Engn, Quebec City, PQ G1V0A6, Canada;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Jiangsu, Peoples R China;[4]Univ Tennessee, Ctr Renewable Carbon, Knoxville, TN 37996 USA

年份：2018

卷号：56

期号：12

起止页码：935-946

外文期刊名：JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS

收录：;EI(收录号：20181705055845);Scopus(收录号：2-s2.0-85045754949);WOS:【SCI-EXPANDED(收录号:WOS:000432017300005)】；

基金：Financial support from the Fundamental Research Funds for the Central Universities (NO. 2572015AB23 and NO. 2572015AB03), Soft Materials Research in Tennessee (SMART), and the Tennessee Experimental Station Project #TEN00510 are gratefully acknowledged. The authors acknowledge support from the China Scholarship Council (NO. 201606600031 and NO. 201506600011). The authors thank Prof. Yan Wu at Nanjing Forestry University for her assistance of SEM measurements.

语种：英文

外文关键词：3D printing; differential scanning calorimetry; nano-indentation; postpolymerization; stereolithography

摘要：Cellulose nanocrystal (CNC) reinforced methacrylate (MA) resin nanocomposite was prepared by 3D stereolithography printing. A postcure process, where the printed nanocomposite was heat-treated under different temperatures, was applied to improve the property of the printed nanocomposites. To investigate the effect of CNC and postcure temperature on the kinetic behavior of the postpolymerization of printed nanocomposites, Fourier-transform infrared spectroscopy and differential scanning calorimetry measurement of the printed nanocomposites before and after postcure were analyzed. The postpolymerization of MA nanocomposites was promoted at a postcure temperature of 140 degrees C for the printed 0.5% CNC/MA nanocomposites compared to the printed MA resin. The addition of CNC retarded the polymerization of MA resin during 3D printing, resulting in poorer mechanical properties of the printed nanocomposites compared to the printed MA resin. However, after postcure, the mechanical properties of the printed nanocomposites were improved by the postpolymerization of the MA nanocomposites. (C) 2018 Wiley Periodicals, Inc.