1999 Fiscal Year Final Research Report Summary
Phase equilibrium and viscosity of polymer solutions in the presence of high pressure gases
| Project/Area Number |
09305053
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
化学工学一般
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| Research Institution | Hiroshima University |
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Principal Investigator |
MASUOKA Hirokatsu Chemical Engineering, Hiroshima University, Professor, 工学部, 教授 (50034385)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Yoshiyuki Chemical Engineering, Hiroshima University, Assistant, 工学部, 助手 (50243598)
TAKISHIMA Shigeki Chemical Engineering, Hiroshima University, Associate Professor, 工学部, 助教授 (10188120)
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| Project Period (FY) |
1997 – 1999
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| Keywords | gas solubility / diffusion coefficient / polymer / carbon dioxide |
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| Research Abstract |
Solubility and diffusivity of gas in polymer are important properties for development and process control of polymer production plant. The gas solubility and diffusivity under high pressures and temperatures are needed for production of polymeric foams, In this work, the solubility and the diffusivity of following systems were investigated.
Solubility and diffusivity:
Gas : C0ィイD22ィエD2
Polymer : polystyrene, polypropylene, high-density polyethylene, poly(butylene succinate), poly(butylene succinate-co-adipate), poly(vinyl acetate)
Gas: NィイD22ィエD2
Polymer : polystyrene, polypropylene, high-density polyethylene
Solubility :
Gas : HCFC-142b, HFC-134a, HFC-152a
Polymer : polystyrene
These systems were expected as new polymeric foam materials, since CFCs (chlorofluorocarbons) as conventional physical blowing agents were banned. Experimental results of the solubility were correlated by the Sanchez-Lacombe equation of state in conjunction with a temperature dependent interaction parameter. The interaction parameter determined from fitting the solubility was inversely proportional to absolute temperature. The diffusivities could be correlated with the free volume theory by Stern et al.
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