Title | Effect of two different RAFT reactions on grafting MMA from pre-irradiated PP film |
Publication Type | Papers in Scientific Journals |
Year of Publication | 2019 |
Authors | Gao Y., Chen Y., Yang L., Rodrigues, L.C., Reis R. L., and Chen J. |
Editors | Chantler C., LaVerne J., and Ulański P. |
Abstract | The graft polymerization of methyl methacrylate (MMA) from pre-irradiated polypropylene (PP) films mediated by two different addition-fragmentation chain transfer (RAFT) polymerization mechanisms—surface-initiated RAFT polymerization and interface-mediated RAFT polymerization was studied. In the first mechanism, electron beam irradiation technique was applied to produce the initial radical active sites and peroxides on PP films. 4-cyanopentanoic acid dithiobenzoate (CPADB) was added in the solution to mediate the graft polymerization. In the second mechanism, a new technique utilizing the decomposition and recombination of peroxides produced by electron beam and di(thiobenzoyl) disulfide (DBDS) to anchor CTA on PP films was applied. GPC, ATR-FTIR, XPS, SEM and water contact angle were used to characterize graft layer. Surface-initiated RAFT polymerization was found to be fast and facile with high degree of grafting (Dg) and large number-average molecular weight. But the samples after reaction were swelling and out of shape. Interface-mediated RAFT polymerization led to rather low Dg and low molecular weight. But the samples kept their pristine shapes and had better surface properties. |
Journal | Radiation Physics and Chemistry |
Volume | 159 |
Pagination | 222-230 |
Date Published | 2019-02-28 |
Publisher | Elsevier |
ISSN | 0969-806X |
DOI | 10.1016/j.radphyschem.2019.02.046 |
URL | https://reader.elsevier.com/reader/sd/pii/S0969806X18305577?token=70B97C7539F3CBB1F9DD39761083C11EAAFC10A80D8759C7D269E944EF5A814965D18E5F5384D88D308D6C17D636036B |
Keywords | Electron beam, PP film, Pre-irradiation, RAFT polymerization, Swelling |
Rights | openAccess |
Peer reviewed | yes |
Status | published |