1. Effect of intermolecular hydrogen bonding on low-surface-energy material of poly(vinylphenol)
- Author
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Shiao-Wei Kuo, Chun-Hung Lin, Chih-Feng Huang, Feng-Chih Chang, Han Ching Lin, Pao Hsiang Tung, and Chih-Feng Wang
- Subjects
chemistry.chemical_classification ,Hydrogen bond ,Intermolecular force ,Polymer ,Thermal treatment ,Surface energy ,Surfaces, Coatings and Films ,chemistry.chemical_compound ,chemistry ,Intramolecular force ,Polymer chemistry ,Materials Chemistry ,Physical chemistry ,Tetrafluoroethylene ,Polystyrene ,Physical and Theoretical Chemistry - Abstract
We discovered that poly(vinylphenol) (PVPh) possesses an extremely low surface energy (15.7 mJ/m 2 ) after a simple thermal treatment procedure, even lower than that of poly(tetrafluoroethylene) (22.0 mJ/m 2 ) calculated on the basis of the two-liquid geometric method. Infrared analyses indicate that the intermolecular hydrogen bonding of PVPh decreases by converting the hydroxyl group into a free hydroxyl and increasing intramolecular hydrogen bonding after thermal treatment. PVPh results in a lower surface energy because of the decrease of intermolecular hydrogen bonding between hydroxyl groups. In addition, we also compared surface energies of PVPh-co-PS (polystyrene) copolymers (random and block) and their corresponding blends. Again, these random copolymers possess a lower fraction of intermolecular hydrogen bonding and surface energy than the corresponding block copolymers or blends after similar thermal treatment. This finding provides a unique and easy method to prepare a low-surface-energy material through a simple thermal treatment procedure without using fluoro polymers or silicones.
- Published
- 2007