文献类型：期刊文献

英文题名：Highly hydrogenated, solvent-resistant, low-temperature conductive nitrile rubber for multifunctional sensors

作者：Gao, Xuehan[1,2,3,4];Wang, Xuan[5,6];Pan, Wenyu[8,9];Wang, Muqun[7];Xu, Xiaofei[5,6];Li, Zequan[2,8,9];Zhao, Shuangliang[1,2,3,4]

机构：[1]Guangxi Univ, Coll Chem & Chem Engn, Nanning 530004, Guangxi, Peoples R China;[2]Guangxi Univ, State Key Lab Featured Met Mat & Life Cycle Safety, Nanning 530004, Peoples R China;[3]Guangxi Univ, Guangxi Key Lab Petrochem Resource Proc & Proc Int, Nanning 530004, Peoples R China;[4]Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China;[5]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[6]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[7]Guangxi Univ, Sch Civil Engn & Architecture, Nanning 530004, Guangxi, Peoples R China;[8]Guangxi Univ, Sch Resources Environm & Mat, Nanning 530004, Guangxi, Peoples R China;[9]Guangxi Engn & Technol Res Ctr High Qual Struct Pa, Nanning 530004, Peoples R China

年份：2025

卷号：504

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20245117557919);WOS:【SCI-EXPANDED(收录号:WOS:001392072200001)】；

基金：This work is supported by the Guangxi Science and Technology Major Program (Nos. 2023AA24001, AA23073019) , Guangxi Major Talent Project, and the Open Project Program (No. MMCS2023OF06) in State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures.

语种：英文

外文关键词：Graft modification; Catalytic hydrogenation; Cross-linking network; Dissipative particle dynamics; Flexible sensors

摘要：Hydrogenated nitrile butadiene rubber (HNBR), known for its high performance, is widely used in seals for the automotive and aerospace industries. However, developing HNBR that combines high hydrogenation, excellent solvent resistance, and superior low-temperature performance remains a challenge. This study introduces a novel two-step process of "graft modification and catalytic hydrogenation" to enhance nitrile rubber (NBR) emulsions. Hydroxyethyl Acrylate (HEA) flexible monomer was grafted onto the rubber molecular chain, and the introduced ester group and hydroxyl group (-OH) enhanced the compatibility and low temperature resistance (-20 degrees C) of the latex system. We achieved hydrogenation rates of up to 99 % by precisely controlling intermediate formation during catalytic hydrogenation. This approach synergistically enhances the mechanical and solvent resistance of HNBR by combining hydrogen bonding from grafting and covalent cross-linking from hydrogenation. The resulting HNBR-HEA achieves a tensile strength of 7.2 MPa, which is 550 % higher than that of unmodified NBR, and the swelling resistance in toluene is reduced to 207 % with a high crosslinking density of 92.07 x 10-3 mol/ cm3. Additionally, when blended with polyaniline (PANI), HNBR-HEA exhibited impressive mechanical strength (3.3 MPa) and high electrical conductivity (0.97 S m- 1), making it suitable for electroluminescent devices, wearable sensors, and Morse code-based emotional expression systems. This study not only presents an innovative method for enhancing rubber properties but also a promising approach for developing multifunctional flexible electronics.