摘要
将两种纳米纤维素[纤维素纳米丝(CNF)和纤维素纳米晶(CNC)]与天然胶乳通过溶液共混和浇注成膜制备CNF/天然橡胶(NR)和CNC/NR复合材料,考察CNF和CNC对NR的补强效果。结果表明:CNF与CNC对NR都具有补强效果,当二者用量相同时,CNF对NR的补强效果更显著;在成膜过程中,CNC发生沉降,在底部形成CNC富集层;当CNC用量大于5份时,CNC/NR复合材料在拉伸过程中CNC富集层发生滑脱分层;纳米纤维素与NR的极性相差较大,提高二者的相容性和界面结合力需进一步研究。
Two kinds of nanocellulose[cellulose nanofibril(CNF) and cellulose nanocrystal(CNC)] were blended with natural rubber latex,and CNF/natural rubber(NR)and CNC/NR composite films were obtained by casting of the mixtures, respectively. The reinforcing effect of CNF and CNC on NR was studied. The results showed that both CNF and CNC had reinforcing effect on NR,and the reinforcing effect of CNF on NR was more significant than that of CNC at the same content. During the film casting process, the CNC settled down from the solution and formed a CNC-enriched layer at the bottom. For the CNC/NR composites,when the CNC content was more than 5 phr,the enriched CNC layer detached from the film during the tensile test. The polarity difference between nanocellulose and NR was large,and thus further study should be focused on improving the compatibility and interfacial adhesion between them.
作者
张春梅
翟天亮
姜婷丽
游曼
ZHANG Chunmei;ZHAI Tianliang;JIANG Tingli;YOU Man(Guiyang University,Guiyang 550005,China;Guizhou Building Material Quality Supervision Testing Center,Guiyang 550000,China;Guizhou Product Quality Supervision and Inspection Institute,Guiyang 550000,China)
出处
《橡胶工业》
CAS
2019年第7期517-520,共4页
China Rubber Industry
基金
贵州省普通高等学校科技拔尖人才支持技划(黔教合KY字[2016]089)
贵阳市财政支持贵阳学院学科与硕士点建设项目[HC-2019]
贵州省一流大学专业建设项目(2017158134)
