Fabrication of High Performance PET/TLCP Fibers through the Synergistic Interfacial Enhancement and Compatibilization of Functional 1D and 2D Carbon Nanomaterials,Macromolecular Materials and Engineering

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Fabrication of High Performance PET/TLCP Fibers through the Synergistic Interfacial Enhancement and Compatibilization of Functional 1D and 2D Carbon Nanomaterials
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2021-01-15 , DOI: 10.1002/mame.202000661
Wenguang Yu _{1,

2,

3} , Xuefeng Gao _{1,

2,

3} , Yuzhou Wang _{1,

2,

3} , Xuechen Wang _{1,

2,

3} , Xingxiang Zhang _{1,

2,

3}

Affiliation

The maleic anhydride functionalized graphene oxide (GO‐MA) is fabricated by an efficient and solvent‐free Diels–Alder reaction. Polyethylene terephthalate (PET)/thermotropic liquid crystal polyester (TLCP), PET/TLCP/GO‐MA, PET/TLCP/aminated multi‐walled carbon nanotubes (MWCNTs‐NH₂), and PET/TLCP/GO‐MA/MWCNTs‐NH₂ composite fibers are systematically melt‐spun. The structure and compatibilizing effects of GO‐MA and MWCNTs‐NH₂ on the mechanical, thermal, and crystallization properties of the composite fibers are indicated. The non‐isothermal crystallization kinetics and X‐ray diffraction (XRD) data show that TLCP and nanofillers can change the crystalline morphology of PET. The mechanical properties of the fibers rise with increasing TLCP content. The tensile strength 929 MPa and modulus 17.5 GPa of the fibers with 7 wt% TLCP and 0.25 wt% nanofillers (0.1 wt% GO‐MA and 0.15 wt% MWCNTs‐NH₂) are significantly higher than those with 7 wt% TLCP (tensile strength 622 MPa and modulus 16.1 GPa) and even higher than those with 15% TLCP (tensile strength 836 MPa, and modulus 18.0 GPa). When the GO‐MA and MWCNTs‐NH₂ co‐exist, the anti‐dripping phenomenon is improved. Therefore, the TLCP, GO, and MWCNTs synergistically strengthens the mechanical properties. This is promising for the industrial fabrication of high‐strength fibers.

中文翻译：

通过功能性一维和二维碳纳米材料的协同界面增强和相容性制备高性能PET / TLCP纤维

马来酸酐官能化的氧化石墨烯（GO-MA）是通过高效且无溶剂的Diels-Alder反应制备的。聚对苯二甲酸乙二酯（PET）/热液晶聚酯（TLCP），PET / TLCP / GO‐MA，PET / TLCP /胺化多壁碳纳米管（MWCNTs-NH ₂）和PET / TLCP / GO-MA / MWCNTs NH ₂复合纤维是系统熔纺的。GO‐MA和MWCNTs‐NH ₂的结构和增容作用指出了复合纤维的机械，热和结晶性能。非等温结晶动力学和X射线衍射（XRD）数据表明TLCP和纳米填料可以改变PET的晶体形态。纤维的机械性能随TLCP含量的增加而增加。含7 wt％TLCP和0.25 wt％纳米填料（0.1 wt％GO-MA和0.15 wt％MWCNTs-NH ₂）的纤维的抗张强度929 MPa和模量17.5 GPa显着高于含7 wt％TLCP的纤维（拉伸强度622 MPa和模量16.1 GPa），甚至比15％TLCP的抗拉强度（836 MPa，模量18.0 GPa）高。当GO‐MA和MWCNTs‐NH _2时并存，抗滴落现象得到改善。因此，TLCP，GO和MWCNT协同增强了机械性能。这对于高强度纤维的工业制造是有前途的。

更新日期：2021-03-18

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