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- Title
Probing the interface structure of block copolymer compatibilizers in semicrystalline polymer blends.
- Authors
Xiaomin Tang; Changhao Liu; Jihua Chen; Kumar, Rajeev; Bowland, Christopher C.; Saito, Tomonori; Dial, Brent E.; Keum, Jong K.; Changwoo Do; Xi Chelsea Chen
- Abstract
The use of block copolymers to compatibilize immiscible plastics is an important strategy for upcycling municipal plastic wastes. Multiblock copolymers (MBCPs) have been proven to be more effective compatibilizers than di- and tri-block copolymers. Herein, we probe the interface structure of an effective multiblock copolymer compatibilizer and compare that with an ineffective triblock copolymer (TBCP). The interface activity of the compatibilizers is understood through a combination of small-angle neutron and x-ray scatterings (SANS and SAXS), by using deuterated homopolymer matrix and protonated compatibilizers. SANS analysis suggests that the MBCP forms a thicker interface layer (7-9 nm) than the TBCP (0-4 nm). In addition, SANS data seems to point to a stronger tendency for the MBCP to locate at the interface. Both factors contribute to its effectiveness at compatibilizing immiscible homopolymers.
- Subjects
POLYMER blends; COMPATIBILIZERS; INTERFACE structures; SMALL-angle neutron scattering; BLOCK copolymers; SMALL-angle X-ray scattering
- Publication
Journal of Applied Polymer Science, 2024, Vol 141, Issue 14, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.55178