| Issue |
Korean Journal of Chemical Engineering,
Vol.17, No.3, 262-265, 2000
Vol.17, No.3, 262-265, 2000
Effects of Nucleating Agent on Nonisothermal Crystallization of Syndiotactic Polystyrene
The effects of nucleating agent on nonisothermal crystallization were examined for syndiotactic polystyrene (SPS) using Differential Scanning Calorimetry (DSC). The crystallization peak temperature Tc, the crystallization rate parameter (CRP), the enthalpy of crystallization and melting, and the recrystallization behavior were compared between organic (DMBS, 1,3,2,4-dis-5(3,4-dimethyl benzylidene) sorbitol) and inorganic (talc) nucleating agents. Both of the nucleation agents promoted the crystallization rate of SPS until some critical concentration of about 3,000 ppm. DMBS worked more effectively as a nucleating agent than talc, although the Tc showed lower level in SPS/DMBS than SPS/talc.
Keywords:
Syndiotactic Polystyrene; Crystallization; Recrystallization; Nucleation Agent; DMBS; Talc
[References]
- Cimmino S, Di Pace E, Martuscelli E, Silvestre C, Polym. Commun., 32, 251, 1991
- Dias ML, "Styrene, Stereospecific Polymerization," Polymeric Materilas Encyclopedia, Salamone, J.C., et al. ed., CRC Press, Inc., Boca Raton, 10, 8014, 1996
- Gianotti G, Valvossori A, Polymer, 31(3), 473, 1990
- Guerra G, Vitagliano VM, De Rosa C, Petraccone V, Corradini P, Macromolecules, 23, 1539, 1990
- Ishihara N, Kumamoto M, Uoi M, EP 210615, 1986
- Ishihara N, Seimiya T, Kurmoto M, Uoi M, Macromolecules, 19, 2464, 1986
- Lopez LC, Cieskinski RC, Putzig CL, Wesson RD, Polymer, 36(12), 2331, 1995
- Mitsuishi K, "Polypropylene (Nucleating Agents)," Polymeric Materials Encyclopedia, Salamone, J.C., et al. ed., CRC Press, Inc., Boca Raton, 9, 6607, 1996
- Sweet GE, Bell JP, J. Polym. Sci. A: Polym. Chem., 10, 1273, 1972
- Ulcer Y, Cakmak M, Miao J, Hsiung CM, J. Appl. Polym. Sci., 60(5), 669, 1996
- Wesson RD, Polym. Eng. Sci., 34(14), 1157, 1994
- Zhang R, Zheng H, Lou X, Ma D, J. Appl. Polym. Sci., 51(1), 51, 1994
[Cited By]
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.