The molecular structure of SEBS grafted with maleic anhydride through ultrasound initiation

Zhang, Xianlong; Wu, Hong; Guo, Shaoyun

doi:10.1007/s10118-015-1645-8

Cited by 6 publications

(1 citation statement)

References 32 publications

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“…The preparation of SEBS/PP/oil/PA6 blends was monitored by FTIR, as shown in Figure 2B. Significantly, with the increase of PA6 dosages from 0 to 35 phr, the CO stretching vibration peak of amide at 1639 cm −1 (peak 1) and C=O stretching vibration of unsaturated carboxylic acid at 1717 cm −1 (peak 2) are both continuously increased; meanwhile, the two asymmetric and symmetric CO stretching vibrations at 1750–1800 cm −1 and 1800–1860 cm −1 , corresponding to the characteristic peaks of acid anhydride, [ 28,29 ] were not observed in the spectra. These results indicate that a click reaction has occurred between SEBS‐g‐MAH and PA6, and the maleic anhydride opens the ring to form the SEBS‐g‐PA6 graft copolymer as a bridge between the two‐phase interface of SEBS and PA6.…”

Section: Resultsmentioning

confidence: 99%

Preparation and properties of reinforced SEBS‐based thermoplastic elastomers modified by PA6

Gao

et al. 2022

Polymer Engineering & Sci

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SEBS-based thermoplastic elastomers modified by PA6 with maleic anhydride grafted copolymer (SEBS-g-MAH or PP-g-MAH) as the compatibilizer were prepared, and the effects of compatibilizer and PA6 on the mechanical and surface properties of blends were investigated in detail. The dosage ratio of SEBSg-MAH to PA6 at 3:5 is an optimal combination for improving mechanical properties. The maleic anhydride of SEBS-g-MAH can react with the terminal amine of PA6 to form the SEBS-g-PA6 graft copolymer as a bridge at the phase interface. With the increase of PA6, a typical sea-island structure gradually appears in the matrix, and when PA6 is 15 phr, the tensile strength and ultimate elongation both reach the maximum of 18.58 MPa and 1097%, and the corresponding wear rate is only 54.4% of that before modification. Furthermore, the addition of PA6 also significantly reduced the contact angle of the blends to below 90 , transforming the hydrophobic surface into a hydrophilic surface. These outcomes provide an effective strategy for reinforcing and modifying the surface properties of thermoplastic elastomers and benefit the development of SEBS in industrial applications.

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Section: Resultsmentioning

confidence: 99%