Moisture Absorption,Perspiration And Themral Conductivity Polyester Fabric Prepared Via Thiol-ene Click Chemistry

As an important textile raw material,polyester（PET）is an ideal textile fiber because of its high strength,rigidity and corrosion resistance.However,the disadvantages of poor hygroscopicity and low thermal conductivity of PET fibers make their application limited,especially in the field of sports wear and outdoor clothing.Therefore,it is meaningful to study the hygroscopicity and thermal conduction of PET fabrics.According to the literature research,we found traditional moisture absorption and thermal conductivity finishing has shortcomings in environmental protection and durability.Thus,we introduced a green and efficient click chemical reaction in the moisture absorption and thermal conductivity finishing of fabrics,and imparts durability to fabric in a covalently bonded manner.This thesis proposed to graft graphene/polyether finishing agent on PET fabric via thiol-ene click chemistry to impart durable moisture wicking and thermal conductivity.This thesis will provide a simple,efficient and gentle new thinking for the modification of polyester fabrics.Firstly,a polyether-type moisture wicking finishing agent（PEG-IEM）containing C=C at the molecular end was synthesized with isocyanoethyl methacrylate（IEM）and polyethylene glycol（PEG）.The structure of the product was characterized by FTIR.The finishing process firstly used alkali treatment to produce hydroxyl groups on the surface of PET fibers,and then 3-mercaptopropyltriethoxysilane（MPTES）was grafted onto the surface of PET fibers and graphene oxide（GO）by room temperature hydrolysis and high temperature condensation respectively.The mercapto functionalized reduced graphene oxide（M-rGO）was prepared by reduction with hydrazine hydrate（N₂H₄）.Then,the modified PET fabric was immersed in the PEG-IEM dispersion of M-rGO,and exposed under the irradiation of ultraviolet light to realize hygroscopicity and thermal conduction finishing via the thiol-ene click reaction among the mercapto-modified PET fabric,the PEG-IEM finishing agent and the M-rGO.The modification and finishing process of the fabric were characterized by XRD,FTIR,SEM,EDS and TG.A MMT was used to test the moisture management capacity of the fabric,the absorption rate of the bottom surface of the fabric was increased from 5.26%/s to 54.19%/s,the spreading speed was increased from 0.172mm/s to3.449mm/s,and the one-way transmission index was increased from-877.55 to 133.19.The thermal conductivity of the fabric was characterized by hand-held infrared imager（FLIR）,and the thermal conductivity of the finished fabric was significantly improved.In addition,the moisture wicking performance and the thermal conductivity of the finished fabric remained substantially unchanged after 15 cycles of water washing,indicating that the prepared moisture wicking and thermal conductive fabric has good durability.In view of the practical performance of textiles,the experimnets were carried out to test antistatic properties,breaking strength,and stiffness.The results showed that the finishing process efficiently improved the antistatic property and had a slight influence on the breaking strength and softness.