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Effect of Graphene Nanoplatelets Presence on the Thermal and Mechanical Properties of Polypropylene Fibers Produced by Melt Spinning

查看全文 作　　者：Ricardo Rodrigo Ramos [1,2]Cecci;Adriano Alves [1,2]Passos;Nathan Riany Valério [2]Albino;Daniel da Silva [2]Vicente;Ademir Severino [2]Duarte;Maria Inês Bruno [1]Tavares 高影响力作者 机构地区：[1]Instituto de Macromoléculas Professora Eloísa Mano,Universidade Federal do Rio de Janeiro,Rio de Janeiro 21941-598,Brazil;[2]SENAI Innovation Institute for Biosynthetic and Fibers,SENAI CETIQT,Rio de Janeiro 20961-020,Brazil高影响力机构 出　　处：《材料科学与工程(中英文B版)》索引2020年第10卷第2期,共11页高影响力期刊 基　　金：financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil(CAPES)-Finance Code 001. 摘　　要：In aiming to obtain fibers with enhanced thermal and mechanical properties,graphene based textile fibers with 144 filaments were developed using an approach in which the PP/GnP(polypropylene/graphene nanoplatelets)nanocomposite was employed as conductive material in a fiber with circular cross-section geometry.The kinetics of thermal degradation was evaluated by the Broido method using thermogravimetric analysis(TGA).Activation energy was enhanced from 260.6 kJ·mol^-1 to 337.4 kJ·mol^-1 compared to the neat PP.GnP increased the thermal stability of the PP,slowing its degradation by thermal depolymerization.Furthermore,the degree of crystallization declined as the GnP content increased,reducing the tenacity of the yarn,but improving its elastic modulus from 91.9 to 95.9 cN/tex,being a promising alternative to produce smart textiles.In conclusion,it has been confirmed that GnP loading up to 1%(w/w)can be incorporated into polypropylene by melt spinning and that the resulting nanocomposite fibers are suitable for several applications in the textile industry. 关 键 词：Polymer fibers POLYPROPYLENE graphene nanoplatelets degradation kinetics
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