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- Title
Excellent UV-absorbing cotton fabric with high durability and hydrophobicity based on surface-initiated ATRP of polymerizable organic UV-absorber.
- Authors
Hua, Saixiang; Zhu, Huichao; Wang, Xiao; Wu, Mingyuan; Wu, Qingyun; Liu, Jiuyi; Yang, Jianjun; Zhang, Jianan
- Abstract
Ultraviolet (UV) protective cotton fabric is a convenient and reliable way to protect human body from sunlight. Herein, a polymerizable UV-absorber, 2-hydroxy-4-(3-methacryloxy-2-hydroxylpropoxy) benzophenone (BPMA) was prepared from the ring-opening addition reaction of 2,4-dihydroxybenzophenone (UV-0) with glycidyl methacrylate. The initiators tethered cotton fabric (CF-Br) was prepared by the immobilization of α-bromoisobutyryl groups. PBPMA grafted cotton fabric (CF-g-PBPMA) was fabricated via surface-initiated activators generated by electron transfer for atom transfer radical polymerization (SI-AGET ATRP). The results indicated that the structure of targeted polymerizable BPMA was defined, and PBPMA chains were successfully grafted from CF-Br to obtain CF-g-PBPMA. Compared with the UV protection factor (UPF) of the original cotton fabric (3.5), the UPF of CF-g-PBPMA achieved 79,630.2 at PBPMA polymerization degree of 404 due to the incorporation of 2-hydroxy benzophenone in repeating units of PBPMA. The as-prepared CF-g-PBPMA can be labeled as "Excellent UV Protection" according to the ASTM D 6603 with UPF values of above 40. Compared with the original cotton fabric, the CF-g-PBPMA displayed excellent superhydrophobicity with the water contact angle (WCA) increasing from 46° to 154° due to the increased surface roughness of cotton fabric induced by the accumulated PBPMA. After 200 washing cycles, the chemically bonded PBPMA enabled the CF-g-PBPMA outstanding durability with the WCA and UPF achieving 135° and 730.5, respectively.
- Subjects
COTTON textiles; GLYCIDYL methacrylate; RING-opening reactions; DEGREE of polymerization; ADDITION reactions; POLYMERIZATION
- Publication
Cellulose, 2022, Vol 29, Issue 13, p7465
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-022-04732-1