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Two β-alanine trimer-grafted SBRs with varied grafting densities, 3a and 3b, have been synthesized. The grafting density of 3b is about twice of that of 3a. FT-IR and DSC evidences suggest that the β-alanine trimer segments in both 3a and 3b exist exclusively in the β-sheet secondary structure, and the β-sheets stack to form crystals in the continuous SBR phase. The Tm of the β-sheet crystals in 3b...
Thiol-functionalized mesoporous poly (vinyl alcohol)/SiO 2 composite nanofiber membranes and pure PVA nanofiber membranes were synthesized by electrospinning. The results of Fourier transform infrared (FTIR) indicated that the PVA/SiO 2 composite nanofibers were functionalized by mercapto groups via the hydrolysis polycondensation. The surface areas of the PVA/SiO 2 composite...
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