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The role of poly (ethylene glycol) on crystallization, interlayer bond and mechanical performance of polylactide parts fabricated by fused filament fabrication

文献类型：期刊论文

作者Gao, Xia3,4; Qi, Shunxin1,2; Zhang, Daijun2,3,4; Su, Yunlan1; Wang, Dujin1,2
刊名ADDITIVE MANUFACTURING
出版日期2020-10-01
卷号35页码:10
ISSN号2214-8604
关键词Polylactide Fused Filament Fabrication Interlayer bond strength Mechanical anisotropy Crystallization behavior
DOI10.1016/j.addma.2020.101414
通讯作者Gao, Xia(gaoxia@cigit.ac.cn) ; Su, Yunlan(ylsu@iccas.ac.cn)
英文摘要The interfacial bond quality between adjacent layers determines the mechanical properties of 3D parts fabricated by fused filament fabrication (FFF) method. For semi-crystalline polymers, molecular diffusion and entanglements as well as crystallization behaviors have been reported to exert influence on the interlayer bond quality for FFF-printed parts. To improve the interlayer bond quality and decrease the mechanical anisotropy, poly (ethylene glycol) (PEG) with various molecular weights are used to modify polylactide (PLA) printing materials. With the addition of PEGs, the interlayer bond strength for FFF-printed PLA parts is enhanced, which decreases the mechanical anisotropy from 32 % for neat PLA parts to 16 % for PLA/PEG parts. Moreover, PEGs with molecular weight larger than 8000 g/mol have profound effects on the mechanical properties of PLA parts. However, PEGs exert minor effect on the crystallization behaviors of FFF-printed PLA parts, although they can accelerate the crystallization kinetics for bulk PLA. By means of DSC method, shear-induced crystallization is proved to dominate the crystallization behaviors of PLA parts. Altogether, the improved mechanical properties for PLA parts with the addition of PEGs are associated with the enhanced molecular diffusion and entanglements at the bond zone, rather than the crystallinity of PLA parts.
资助项目National Key Research and Development Program of China[2016YFB1100800] ; National Natural Science Foundation of China[51603205] ; National Natural Science Foundation of China[51673198] ; Talent Cultivation and Recruitment Plan of the CAS Light of West China Program
WOS研究方向Engineering ; Materials Science
语种英语
出版者ELSEVIER
WOS记录号WOS:000576937500005
源URL[http://119.78.100.138/handle/2HOD01W0/11859]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Gao, Xia; Su, Yunlan
作者单位1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, 266 Fangzheng Ave, Chongqing 400714, Peoples R China
4.Chongqing Engn Res Ctr Applicat Technol 3D Printi, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Gao, Xia,Qi, Shunxin,Zhang, Daijun,et al. The role of poly (ethylene glycol) on crystallization, interlayer bond and mechanical performance of polylactide parts fabricated by fused filament fabrication[J]. ADDITIVE MANUFACTURING,2020,35:10.
APA Gao, Xia,Qi, Shunxin,Zhang, Daijun,Su, Yunlan,&Wang, Dujin.(2020).The role of poly (ethylene glycol) on crystallization, interlayer bond and mechanical performance of polylactide parts fabricated by fused filament fabrication.ADDITIVE MANUFACTURING,35,10.
MLA Gao, Xia,et al."The role of poly (ethylene glycol) on crystallization, interlayer bond and mechanical performance of polylactide parts fabricated by fused filament fabrication".ADDITIVE MANUFACTURING 35(2020):10.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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