采用差示扫描量热仪、偏光显微镜、动态热机械性能测试仪和广角X射线衍射仪等,对不同组成的iPP/PPOc共混物的相容性和结晶行为进行了深入的研究.结果表明,IPP/PPOc共混物在整个组成范围内均出现一个玻璃化转变温度,说明在无定形区iPP和PPOc具有较好的相容性,而玻璃化转变温度随着PPOc含量的增加呈下降趋势;此外,随着PPOc含量的增加,共混物的熔点、结晶温度、球晶尺寸和球晶的完善程度均呈下降趋势,而不影响共混物的晶型;iPP/PPOc共混物在其整个组成范围内都只出现1个熔融峰和1个结晶峰,说明在晶区产生了共晶现象.
参考文献
[1] | P. Dias;Y.J. Lin;B. Poon .Adhesion of statistical and blocky ethylene-octene copolymers to polypropylene[J].Polymer: The International Journal for the Science and Technology of Polymers,2008(12):2937-2946. |
[2] | Wachowicz M;Gill L;Wolak J;White JL .Polypropylene and polyethylene-copolymer blend miscibility: Slow chain dynamics in individual blend components near the glass transition[J].Macromolecules,2008(8):2832-2838. |
[3] | Yoshinobu Nozue;Takashi Sakurai;Hidetake Hozumi .Investigation of Miscibility between iPP and Propylene-Butene Random Copolymer by Small-Angle Neutron Scattering[J].Macromolecules,2007(2):273-277. |
[4] | Phinyocheep P.;Axtell FH.;Laosee T. .Influence of compatibilizers on mechanical properties, crystallization, and morphology of polypropylene/scrap rubber dust blends[J].Journal of Applied Polymer Science,2002(1):148-159. |
[5] | Tashiro K;Izuchi M;Kobayashi M et al.Cocrystallization and phase segregation of polyethylene blends between the D and H species.3.Blens content dependence of the crystallization behavior[J].Macromolecules,1994,27(05):1221. |
[6] | Alamo RG;Lin J.S. -;Kim MH .The cocrystallization behavior of binary blends of isotactic polypropylene and propylene-ethylene random copolymers[J].Polymer engineering and science,1999(11):2117-2131. |
[7] | Pal S;Nandi AK .Cocrystallization mechanism of poly(3-alkyl thiophenes) with different alkyl chain length[J].Polymer: The International Journal for the Science and Technology of Polymers,2005(19):8321-8330. |
[8] | Bovey F A .Chain structure and conformation of macromolecules[R].New York:Academic Press,Inc,1982. |
[9] | Gonzalez-Montiel A;Keskkula H;Paul D R .Impact-modified nylon 6/polypropylene blends:1.Morphology-propertyrelationships[J].Polymer,1995,36(24):4587. |
[10] | Qiu Z B;Ikeharab T;Nishi T .Miscibility and crystallization in crystalline/crystalline blends of poly(butylene succihate)/poly(ethylene oxide)[J].Polymer,2003,44(09):2799. |
[11] | Khonakdar H A;Wagenknecht U;Jafari S H et al.Dynamic mechanical properties and morphology of polyethylene/ethylene vinyl acetate copolymer blends[J].Advances in Polymer Technology,2004,23(04):307. |
[12] | Mao, YM;Zuo, F;Keum, JK;Hsiao, BS;Thurman, DW;Tsou, AH .Crystallization Behavior of Isotactic Propylene-1-Hexene Random Copolymer Revealed by Time-Resolved SAXS/WAXD Techniques[J].Journal of Polymer Science. Part B, Polymer Physics,2010(1):26-32. |
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