| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Epoxy Toughening from Core-Shell Structured Star Polymers as Highly Effective Additives |
| 초록 |
Epoxy polymers have low toughness and impact resistance due to highly crosslinked structures. Toughening of such brittle polymers via incorporation of a dispersed elastomeric phase is well-known as an effective method to improve mechanical properties. In this study, we propose core shell structured star polymers as new alternatives to BCP micelles or CSR. The star polymers were composed of polymethyl acrylate (PMA) arm and various cores such as glassy divinylbenzene (DVB) or rubbery butadiene (BDA). We have synthesized star polymers having various length of PMA arms with DVB or BDA cores. The resulting morphologies were characterized by TEM and various nanostructures such as spheres and vesicles were observed within the cross-linked epoxy matrix. We observed the fracture toughness under various conditions and optimized the toughening effect with respect to the core property and length of arm in the star polymer additives. |
| 저자 |
문준수, 방준하
|
| 소속 |
고려대 |
| 키워드 |
Epoxy toughening; Additive; star polymer; core shell
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| E-Mail |
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