Synthesis and Characterization of Silicone-modified Polyether

ZANG Jinqiu; YANG Kai; WANG Ting; CHEN Dong; ZHU Fulin

doi:10.19554/j.cnki.1001-3563.2025.23.015

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (23) : 145-151. DOI: 10.19554/j.cnki.1001-3563.2025.23.015

Advanced Materials

Synthesis and Characterization of Silicone-modified Polyether

ZANG Jinqiu^*, YANG Kai, WANG Ting, CHEN Dong, ZHU Fulin

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Abstract

To improve the poor low-temperature resistance in traditional polyurethane adhesives for packaging, the work aims to synthesize a non-hydrolytic ABA block organosilicone-modified polyether with stable Si—C bonds. With polymethylhydrosiloxane and methylallyl polyether containing terminal unsaturated C=C double bonds as raw materials and chloroplatinic acid as the catalyst, a series of bis-hydroxyl-terminated polyether-polydimethylsiloxane-polyether (PE-PDMS-PE) ABA triblock oligomers were successfully synthesized through silane-hydrogen addition reactions and structurally characterized by ¹H NMR, ¹³C NMR, ²⁹Si NMR, FT-IR, and GPC. Its structural features included a hydrophobic central block (B) composed of polydimethylsiloxane (PDMS), two methylallyl polyether blocks (A) at both ends, and active hydroxyl groups (—OH) present at both termini of the polymer chains. Hydrolytically stable non-hydrolytic ABA block organosilicone-modified polyether with Si—C bonds can be synthesized by chemically bridging hydrophilic polyether blocks (A) with hydrophobic PDMS blocks (B) via covalent bonds.

Key words

polyether / polydimethylsiloxane / triblock oligomer / low-temperature resistance

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ZANG Jinqiu, YANG Kai, WANG Ting, CHEN Dong, ZHU Fulin. Synthesis and Characterization of Silicone-modified Polyether[J]. Packaging Engineering. 2025, 46(23): 145-151 https://doi.org/10.19554/j.cnki.1001-3563.2025.23.015

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