Modification of Polymer Substrates with Low Surface Free Energy Material by Low‐Temperature Cured Polybenzoxazine

Abstract

The B‐ala/AIBN PBZ system has a high extent of ring‐opening of oxazine because phenol‐containing oligomers are formed at the early stage of the curing process. As a result, the B‐ala/AIBN PBZ system possesses a relatively stronger intramolecular hydrogen bonding and lower surface energy than the pure B‐ala system at low temperature curing. In this context, poly(4‐vinyl pyridine), poly(4‐vinyl phenol) thin films and polycarbonate substrates, which lack liquid resistance, possess low surface free energy after modification with B‐ala/AIBN = 5/1 PBZ.magnified image

Low surface energy surfaces from self-assembly of perfluoropolymer with sticky functional groups

“…Low surface free energy materials are important in many practical applications, such as in aerospace, clothing, integrated sensors, and environmentally friendly protection against biological fouling [1][2][3][4][5]. Poly(tetrafluoroethylene) (PTFE) as the benchmark low surface energy material has limitations due to its low oil repellency and to its microcrystalline surface structure [6].…”

Modification of benzoxazine with aryl-ether-ether-ketone diphenol: preparation and characterization

“…Benzoxazines are newly developed heat-resistant resins and possess a series of intriguing properties, such as molecular design exibility, [1][2][3] near-zero shrinkage upon curing, 4,5 high glass transition temperature (usually much higher than the curing temperature), low water absorption, 6,7 low surface energy, [8][9][10][11] good mechanical properties and good thermal stability. [12][13][14][15][16][17] However, their high curing temperature and the brittleness of polybenzoxazine restrict their application.…”

Using coaxial electrospinning to fabricate core/shell-structured polyacrylonitrile–polybenzoxazine fibers as nonfouling membranes

“…The surface free energy of a polybenzoxazine film is 16.4 mJ m -2 , significantly lower than that of polytetrafluoroethene by 21 mJ m -2 [19]. In this study we used a one-step coaxial electrospinning process to fabricate PAN-based nanofibers presenting PBA on their outer surfaces.…”