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Divinyl‐terminated polysiloxane as an effective polyacrylates modifier for pigment printing: A study with different molecular weights and quantities
Author(s) -
Zhang Qipeng,
Wu Minghua
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47961
Subject(s) - miniemulsion , materials science , contact angle , polymerization , emulsion polymerization , polymer chemistry , toughness , absorption of water , chemical engineering , wetting , composite material , polymer , engineering
Polyacrylates binder is used as an environmental approach for pigment printing. However, the poor water resistance and abrasive resistance of it makes this technique limited. In this study, divinyl‐terminated polysiloxane (Divi‐PDMS) had been used to modify polyacrylates by miniemulsion polymerization. The conversion and coagulation of miniemulsion polymerization were evaluated by gravimetry method, the colloid properties of prepared latexes were obtained and the structures were confirmed by Fourier transformed infrared spectroscopy and NMR. Surface properties of latex films were investigated in terms of dynamic water contact angle, water absorption, and mechanical tensile properties. The results show that the polymerization has good stability, and the product has good phase separation of polysiloxane, which results in increased hydrophobicity and toughness of the film. The film with low‐molecular weight and 8% dosage of Divi‐PDMS has better hydrophobicity and toughness. The product is applied to pigment printing with better wet rubbing fastness and soft handle compared with the unmodified binder. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47961.