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Grafting of polymers from clay nanoparticles via in situ free radical surface-initiated polymerization: Monocationic versus bicationic initiators
| Content Provider | Semantic Scholar |
|---|---|
| Author | Fan, Xiaowu Xia, Chuanjun Advincula, Rigoberto C. |
| Copyright Year | 2003 |
| Abstract | Surface-initiated polymerization (SIP) from clay nanoparticles was compared between surface-bound mono- and bicationic free radical initiators. Distinct properties in molecular weight (MW), extent of exfoliation, and particle morphology were observed as a consequence of using two different initiator architectures. X-ray diffraction (XRD) results showed that the clay intercalated with monocationic initiator has a larger d spacing and gave a more ordered structure. IR, X-ray photoelectron spectroscopy, and qualitative thermogravimetric analysis confirmed the attachment of both initiators. XRD further showed that the SIP product from the bicationic initiator retained some intercalated structure while a highly exfoliated structure is achieved by the SIP through the monocationic initiator. Consequently the monocationic initiator gave a higher MW polymer. We have found that well-dispersed intercalated clay particles and efficient monomer diffusion are crucial factors in performing a successful SIP and in achiev... |
| Starting Page | 4381 |
| Ending Page | 4389 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/la0268193 |
| Volume Number | 19 |
| Alternate Webpage(s) | http://nsmn1.uh.edu/nanostructure/CV/Fan%20Langmuir%202003-%2019-%204381.pdf |
| Alternate Webpage(s) | https://doi.org/10.1021/la0268193 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
