Citation: Xian-long Zhang, Hong Wu, Shao-yun Guo. The Molecular Structure of SEBS Grafted with Maleic Anhydride through Ultrasound Initiation[J]. Chinese Journal of Polymer Science, ;2015, 33(7): 988-999. doi: 10.1007/s10118-015-1645-8 shu

The Molecular Structure of SEBS Grafted with Maleic Anhydride through Ultrasound Initiation

1.
The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China

Received Date: 29 October 2014
Revised Date: 8 December 2014

Fund Project: This work was financially supported by the National Natural Science Foundation of China (Nos. 51273132, 50933004 and 51121001).

The molecular structure of SEBS grafted with maleic anhydride (SEBS-g-MAH) through ultrasound initiation was investigated by nuclear magnetic resonance (NMR). It can be confirmed that the grafting groups mainly exist on the terminus of the ultrasound initiated SEBS-g-MAH. However, it was difficult to detailedly confirm the block of the SEBS on which MAH is grafted through characterization of 1H-NMR due to the complex structure of the SEBS. Moreover, the temperature-dependent infrared spectra of the ultrasound initiated SEBS-g-MAH were also analyzed by the perturbation correlation moving window 2D (PCMW2D) correlation spectroscopy. It could confirm that the broken point existed at the joint between poly(ethylene-co-1-butene) (EB block) and polystyrene block (S block). Therefore, the grafting groups were attached to not only the S block but also the EB block. In addition, in order to well understand the aggregation structure of the ultrasound initiated SEBS-g-MAH, the possible grafting mechanism and aggregation model of the ultrasound initiated SEBS-g-MAH at room temperature were also proposed.
- Ultrasound,
- Molecular structure,
- SEBS-g-MAH,
- Grafting
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1.
沈阳化工大学材料科学与工程学院沈阳 110142