Tacticity effect on complex formation between tactic PHEMAs and tactic PMMAs = 탁틱 PHEMAs 와 탁틱 PMMAs간의 복합체 형성에 대한 탁티시티 효과

Viscometric and calorimetric studies have been carried out on the complex systems of tactic poly(methyl methacrylate) (PMMA) with tactic poly(2-hydroxyethyl methacrylate) (PHEMA). The reduced relative deviation from the additivity of the viscosity, in the systems of tactic PHEMA/tactic PMMA blends which were obtained from non-acidic DMF and acidic DMF(pH=4) medium were measured in various unit mole fraction. By differential scanning calorimeter (DSC) method, we obtained the melting temperature, $T_m$ and the heat of fusion, $\triangle{H}_m$ of PHEMA/PMMA complex systems. From these results, we found that the it-PMMA/st-PHEMA blend doesn``t form the complex, and the st-PHEMA/st-PMMA and it-PHEMA/it-PMMA systems form very weak complexes. On the other hand, the it-PHEMA/st-PHEMA and it-PHEMA/st-PMMA systems form compact complexes. In it-PHEMA/st-PMMA system, the main driving force is the van der Waals force, and in the other systems the hydrogen bonding act as the main driving force. The main objective of this research is to obtain more information about the possibility and the driving force of the complex formation.
Advisors
Jhon, Mu-Shikresearcher전무식researcher
Publisher
한국과학기술원
Issue Date
1993
Identifier
68365/325007 / 000911295
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 화학과, 1993.2, [ v, 39 p. ]

URI
http://hdl.handle.net/10203/32635
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=68365&flag=t
Appears in Collection
CH-Theses_Master(석사논문)
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