Non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends

doi:10.1016/j.cjche.2015.04.012

Chin.J.Chem.Eng. ›› 2015, Vol. 23 ›› Issue (8): 1403-1407.DOI: 10.1016/j.cjche.2015.04.012

• MATERIALS AND PRODUCT ENGINEERING • Previous Articles Next Articles

Non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends

Min He¹, Siqi Zong², Yahuan Zhou², Huaibing Guo², Qingchun Fan²

1 School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China;
2 School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology, Wuhan 430074, China

Received:2014-12-11 Revised:2015-03-02 Online:2015-09-26 Published:2015-08-28
Contact: Qingchun Fan
Supported by:
Supported by the Graduate Innovative Fund of Wuhan Institute of Technology (CX2013019).

Non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends

Min He¹, Siqi Zong², Yahuan Zhou², Huaibing Guo², Qingchun Fan²

1 School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China;
2 School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology, Wuhan 430074, China

通讯作者: Qingchun Fan
基金资助:
Supported by the Graduate Innovative Fund of Wuhan Institute of Technology (CX2013019).

Abstract

Abstract: The non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends was investigated by differential scanning calorimetry (DSC). The Mo equation was employed to analyze the non-isothermal crystallization data. The crystallization activation energies were also evaluated by the Kissinger method. The results show that the crystallization onset temperature (T_onset) and crystallization peak temperature (T_p) decrease with the increase of the content of reactive microgel, while ΔT (T_onset-T_p), the crystallization half-time (t_1/2) and the crystallization enthalpy (ΔH_c) increase. The required cooling rates of blends are higher than that of neat nylon 6 in order to achieve the same relative crystallinity in a unit of time. The crystallization activation energies of the reactive microgel/nylon 6 blends are greater than those of the neat nylon 6. When the content of reactive microgel is 30%, the relative crystallinity (X_t) reaches the maximum.

Key words: Reactive microgel, Nylon 6, Non-isothermal crystallization kinetics, Crystallization activation energy

摘要： The non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends was investigated by differential scanning calorimetry (DSC). The Mo equation was employed to analyze the non-isothermal crystallization data. The crystallization activation energies were also evaluated by the Kissinger method. The results show that the crystallization onset temperature (T_onset) and crystallization peak temperature (T_p) decrease with the increase of the content of reactive microgel, while ΔT (T_onset-T_p), the crystallization half-time (t_1/2) and the crystallization enthalpy (ΔH_c) increase. The required cooling rates of blends are higher than that of neat nylon 6 in order to achieve the same relative crystallinity in a unit of time. The crystallization activation energies of the reactive microgel/nylon 6 blends are greater than those of the neat nylon 6. When the content of reactive microgel is 30%, the relative crystallinity (X_t) reaches the maximum.

关键词: Reactive microgel, Nylon 6, Non-isothermal crystallization kinetics, Crystallization activation energy

Min He, Siqi Zong, Yahuan Zhou, Huaibing Guo, Qingchun Fan. Non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends[J]. Chin.J.Chem.Eng., 2015, 23(8): 1403-1407.

Min He, Siqi Zong, Yahuan Zhou, Huaibing Guo, Qingchun Fan. Non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends[J]. Chinese Journal of Chemical Engineering, 2015, 23(8): 1403-1407.

References

[1] E.K. Bolton, Nylon, Chem. Eng. News 20(21) (1942) 1365-1366.

[2] E.K. Bolton, Chemical industry medal. Development of nylon, Ind. Eng. Chem. 34(1) (1942) 53-58.

[3] M. Inoue, Nucleating effect on the kinetics of crystallization and the spherulites of nylon 6, J. Polym. Sci. A 1(1963) 2013-2020.

[4] G.Q. Wang, X.F. Wang, Polymer Modification, China Light Industry Press, Beijing, 2000. 62-63. (in Chinese)

[5] W.G. Weng, G.H. Chen, D.J. Wu, Crystallization kinetics and melting behaviors of nylon 6/foliated graphite nanocomposites, Polymer 44(26) (2003) 8119-8132.

[6] H.K. Zhao, C.X. Qian, S.Y. Qiao, Kinetics of rubber-modified nylon 6, J. Chem. Ind. Eng. 58(8) (2007) 1989-1995. (in Chinese)

[7] Sumana Mallick, B.B. Khatua, Morphology and properties of nylon 6 and high density polyethylene blends in absence and presence of nanoclay, J. Appl. Polym. Sci. 121(2011) 359-368.

[8] W. Funke, O. Okay, Microgles:Intramolecularly crosslinked macromolecules with a globular structure, Adv. Polym. Sci. 136(1988) 139-234.

[9] C. Yuan, Y.J.Wang, T.X. Zhang, D.H. Liu, T.Y. Cao, Syntheses and applications of reactive polymer microgels, Polym. Bull. 1(1999) 66-71.

[10] L.L. Xu, X.J. Zhang, K. Xu, S.Q. Lin, M.C. Chen, Variation of non-isothermal crystallization behavior of isotactic polypropylene with varying β-nucleating agent content, Polym. Ind. 59(2010) 1441-1450.

[11] V. Ramesh, B.P. Panda, Effect of surface-treated TiO₂ on non-isothermal crystallization behavior of poly trimethylene terephthalate nanocomposites, Polym. Compos. 33(12) (2012) 2177-2187.

[12] A. Jeziorny, Parameters characterizing the kinetics of the non-isothermal crystallization of poly(ethylene terephthalate) determined by DSC, Polymer 19(1978) 1142-1144.

[13] T. Ozawa, Kinetics of non-isothermal crystallization, Polymer 12(1971) 150-158.

[14] T.X. Liu, Z.S. Mo, S.E.Wang, H.F. Zhang, Non-isothermalmelt and cold crystallization kinetics of poly(aryl ether ketone), Polym. Eng. Sci. 37(3) (1997) 568-575.

[15] Z.G. Huang, X.Y. Zou, L.C. Fang, Study on non-isothermal crystallization behavior of PA6/kaolin composites, Mod. Plast. Process. Appl. 22(5) (2010) 40-43.

[16] Jana Machotová, Jaromír Šňupárek, Functionalised microgels for acrylic coatings, Macromol. Symp. 281(2009) 197-205.

[17] P. Yang, G.S. Hu, B.B.Wang, Investigation on non-isothermal crystallization kinetics of nylon 6/11 copolymer, J. N. Univ. China 29(2) (2010) 156-159(in Chinese).

[18] G. Xu, W.F. Shi, P. Hu, S.P. Mo, Crystallization kinetics of polypropylene with hyperbranched polyurethance acrylete being used as a toughening agent, Eur. Polym. J. 41(2005) 1828-1837.

[19] J.L. Wang, Z.Y. Lin, F. Wang, G.R. Wang, Non-isothermal crystallization behavior of TPU/PA6 blends, Chem. Eng. Equip. 3(2008) 7-10. (in Chinese)

[20] Q.C. Fan, F.H. Duan, H.B. Guo, T.Wu, Non-isothermal crystallization kinetics of polypropylene and hyperbranched polyester blends, Chinese J. Chem. Eng. 23(2) (2015) 441-445.

[21] W. Wang, D.M. Wang, J. He, C.W. Liu, X.G. Zhao, C.H. Chen, Effect of copolymerization on crystallization kinetics of semicrystalline polyimides, J. Appl. Polym. Sci. 127(2013) 4601-4609.

[22] H.E. Kissinger, J ResNatt Stds, The study of morphology of crystallization and nonisothermal crystallization kinetics of PP, J. Appl. Polym. Sci. 57(1956) 217-225.

Non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends

Non-isothermal crystallization kinetics of reactive microgel/nylon 6 blends

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 0

Recommended Articles

Metrics

Comments