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. 2014 Apr 8:4:4604.
doi: 10.1038/srep04604.

From commodity polymers to functional polymers

Tao Xiang  1 , Ling-Ren Wang  1 , Lang Ma  1 , Zhi-Yuan Han  1 , Rui Wang  1 , Chong Cheng  1 , Yi Xia  1 , Hui Qin  1 , Chang-Sheng Zhao  2
Affiliations

From commodity polymers to functional polymers

Tao Xiang et al. Sci Rep. .

Abstract

Functional polymers bear specified chemical groups, and have specified physical, chemical, biological, pharmacological, or other uses. To adjust the properties while keeping material usage low, a method for direct synthesis of functional polymers is indispensable. Here we show that various functional polymers can be synthesized by in situ cross-linked polymerization/copolymerization. We demonstrate that the polymers synthesized by the facile method using different functional monomers own outstanding pH-sensitivity and pH-reversibility, antifouling property, antibacterial, and anticoagulant property. Our study opens a route for the functionalization of commodity polymers, which lead to important advances in polymeric materials applications.

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Figures

Figure 1
Figure 1
(a). Water flux for the membrane as a function of pH values. (b). Water flux for the membranes as the feed solutions are changed between pH 3.0 and pH 10.0 with 10 min equilibration flow followed by 10 min sample collection. For membranes: PES/P(AA-MMA) (formula image); PES/PAA(formula image). Duplicate experiments showed similar results.
Figure 2
Figure 2. Time-dependent fluxes during a process of three-cycle of BSA ultrafiltration at room temperature for membranes PES (a, ), PES/PSBMA-2% (b, ), PES/PSBMA-4% (c, ) and PES/PSBMA-6% (d, ).
Each recycle includes the ultrafiltration of BSA solution (1.0 mg/mL) and then PBS.
Figure 3
Figure 3. Bacterial cell density of S. aureus and E. coli on the pristine and modified membranes (a) PSf, (b) PSf/PDMC, (c) PS, (d) PS/PDMC after exposuring to S. aureus (106 cells/mL) for 24 h; (e) PSf, (f) PSf/PDMC, (g) PS, (h) PS/PDMC after exposuring to E. coli (106 cells/mL) for 24 h.
Figure 4
Figure 4. Activated partial thromboplastin times (APTTs) and thrombin times (TTs) for the membranes modified by PAA, PNVP, PNaSS and the copolymers.
Values are expressed as means ± SD, n = 3.
See this image and copyright information in PMC

References

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