자료유형 | 학위논문 |
---|---|
서명/저자사항 | Drying Inhomogeneity during Film Formation of Waterborne Latex Systems: A Mechanistic Study on Skin Layer Formation. |
개인저자 | Huang, Hao. |
단체저자명 | Lehigh University. Chemical Engineering. |
발행사항 | [S.l.]: Lehigh University., 2018. |
발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2018. |
형태사항 | 252 p. |
기본자료 저록 | Dissertation Abstracts International 79-10B(E). Dissertation Abstract International |
ISBN | 9780438058415 |
학위논문주기 | Thesis (Ph.D.)--Lehigh University, 2018. |
일반주기 |
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Advisers: Mohamed S. El-Aasser |
요약 | Drying inhomogeneity of latex is the phenomenon where the spatial distribution of latex particles is non-uniform and evolving with time during the drying process. In order to study this phenomenon, this dissertation research employed the optical |
요약 | For the polystyrene model latex (with Tg = 106 °C), multiple types of drying inhomogeneity were observed at room temperature. Vertical packing and horizontal drying front were the packing processes of particles from the top of latex and the edge |
요약 | For the film-forming low-Tg model latexes (acrylate copolymer latexes with Tg < 0 °C) at room temperature, the particles on the top of drying latex are readily deformed and coalesced early into a polymer layer (called "skin layer"). The low-perm |
요약 | It is found that, the post-added (added after polymerization) surfactant into the low-Tg latex can delay the maturation of skin layer (Stage III), accelerate the increment of hcoal with time, and shorten the film drying time. A mechanism is prop |
요약 | Drying inhomogeneity is complex, which is not only determined by the physical properties of latex, but also influenced by the water-soluble molecules and their molecular interactions. The OCT-Gravimetry-Video method can be a useful tool to study |
일반주제명 | Chemical engineering. Materials science. Physics. |
언어 | 영어 |
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