Macromolecular Research, Vol.19, No.11, 1195-1201, November, 2011
Nanocomposite Membranes Consisting of Poly(vinyl chloride) Graft Copolymer and Surface-Modified Silica Nanoparticles
E-mail:,
A graft copolymer of poly(vinyl chloride)-graft-poly(oxyethylene methacrylate) (PVC-g-POEM) was synthesized via atom transfer radical polymerization (ATRP), and fumed silica (SiO2) nanoparticles were modified by grafting POEM via a three-step synthetic approach. The resultant graft copolymer and modified SiO2 nanoparticles were solution blended to prepare PVC-g-POEM/SiO2-POEM nanocomposite membranes. Uniform distribution of SiO2-POEM nanoparticles in the membranes and microphase-separated morphology were confirmed by transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). X-ray diffraction (XRD) analysis revealed increased randomness in the amorphous phase of PVC-g-POEM and continuous decrease in the interchain d-spacing with increased SiO2-POEM content, indicating a more closely packed nanocomposite membrane structure. The mechanical properties of PVC-g-POEM/SiO2-POEM membranes were superior to those of PVC-g-POEM,
resulting from strong interfacial interactions in the membranes due to the segregation and entanglement of the POEM chains. In addition, the permeation performances of the PVC-g-POEM/SiO2-POEM nanocomposite membranes were somewhat better than those of PVC-g-POEM, which showed excellent CO2/N2 and CO2/H2 separation capabilities. For example, the CO2 permeability and CO2/N2 selectivity of PVC-g-POEM/SiO2-POEM (2%) at 35 ℃ were 200 Barrer and 43, respectively. Thus, we successfully prepared membranes that deliver high permeation properties, as well as good mechanical properties.
Keywords:graft copolymer;nanoparticle;nanocomposite;atom transfer radical polymerization (ATRP);gas separation.
- Robeson LM, J. Membr. Sci., 320(1-2), 390 (2008)
- Peter J, Khalyavina A, Kriz J, Bleha B, Eur. Polym. J., 45, 1716 (2009)
- Jung CH, Lee YM, Macromol. Res., 16(6), 555 (2008)
- Merkel TC, Freeman BD, Spontak RJ, He Z, Pinnau I, Meakin P, Hill AJ, Science, 296, 519 (2002)
- Merkel TC, Freeman BD, Spontak RJ, He Z, Pinnau I, Meakin P, Hill AJ, Chem. Mater., 15, 109 (2003)
- Prado L, Sforca ML, de Oliveira AG, Yoshida IVP, Eur. Polym. J., 44, 3080 (2008)
- Topuz B, Ciftcioglu M, J. Membr. Sci., 350(1-2), 42 (2010)
- Sadeghi M, Khanbabaei G, Dehaghani AHS, Sadeghi M, Aravand MA, Akbarzade M, Khatti S, J. Membr. Sci., 322(2), 423 (2008)
- Sadeghi M, Semsarzadeh MA, Moadel H, J. Membr. Sci., 331(1-2), 21 (2009)
- Patel NP, Miller AC, Spontak RJ, Adv. Mater., 15(9), 729 (2003)
- Patel NP, Aberg CM, Sanchez AM, Capracotta MD, Martin JD, Spontak RJ, Polymer, 45(17), 5941 (2004)
- Husain S, Koros WJ, J. Membr. Sci., 288(1-2), 195 (2007)
- Ahn SH, Seo JA, Kim JH, Ko Y, Hong SU, J. Membr. Sci., 345(1-2), 128 (2009)
- Shao L, Chung TS, Int. J. Hydrog. Energy, 34(15), 6492 (2009)
- Park I, Peng HG, Gidley DW, Xue SQ, Pinnavaia TJ, Chem. Mater., 18, 650 (2006)
- Ahn SH, Koh JH, Seo JA, Kim JH, Chem. Commun., 46, 1935 (2010)
- Lee KJ, Park JT, Goh JH, Kim JH, J. Polym. Sci. A: Polym. Chem., 46(12), 3911 (2008)
- Chen GJ, Zhu XL, Cheng ZP, Lu JM, J. Appl. Polym. Sci., 96(1), 183 (2005)
- Trapa PE, Won YY, Mui SC, Olivetti EA, Huang BY, Sadoway DR, Mayes AM, Dallek S, J. Electrochem. Soc., 152(1), A1 (2005)
- Zuo XT, Yu SL, Xu X, Bao RL, Xu J, Qu WM, J. Membr. Sci., 328(1-2), 23 (2009)
- Zhou L, Yuan W, Yuan J, Hong X, Mater. Lett., 62, 1372 (2008)
- Park JT, Koh JH, Koh JK, Kim JH, Appl. Surf. Sci., 255(6), 3739 (2009)
- Koh JH, Kim YW, Park JT, Kim JH, J. Polym. Sci. B: Polym. Phys., 46(7), 702 (2008)
- Kim YK, Park HB, Lee YM, J. Membr. Sci., 243(1-2), 9 (2004)
- Park HB, Kim JK, Nam SY, Lee YM, J. Membr. Sci., 220(1-2), 59 (2003)
- Joly C, Smaihi M, Porcar L, Noble RD, Chem. Mater., 11, 2331 (1999)
- Garcia M, Barsema J, Galindo RE, Cangialosi D, Garcia-Turiel J, Van Zyl WE, Verweij H, Blank DHA, Polym. Eng. Sci., 44(7), 1240 (2004)