Synthesis of poly(maleic acid alkylamide-<italic>co</italic>-<italic>α</italic>-olefin-<italic>co</italic>-styrene) and their effect on flow ability of oils

doi:10.1007/s11705-010-0542-5

Front Chem Sci Eng

2011, Vol. 5

Issue (1) : 74-78 https://doi.org/10.1007/s11705-010-0542-5

RESEARCH ARTICLE

Synthesis of poly(maleic acid alkylamide-co-α-olefin-co-styrene) and their effect on flow ability of oils

Jingjing XU¹, Jun XU¹(

), Jie SUN², Shili XING¹, Li LI¹, Xuhong GUO¹

1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 2. Institute of Chemical Materials, China Academy of Engineering Physics, Sichuan 621900, China

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Abstract

To improve the flow ability of crude oil with high content of aromatic asphaltenes, new comb-type copolymers of poly(maleic anhydride-co-α-olefin-co-styrene) (MASCs) with different ratios of maleic anhydride (MA) to styrene were designed and synthesized. ¹H NMR and FTIR spectra were used to characterize the chemical structure of the copolymers. The effect of copolymers on the flow ability of model waxy oil and crude oil were studied by rheological method and polarizing light microscopy. Upon the addition of MASCs, the yield stresses of oils were decreased by 1 to 3 orders of magnitude, and the morphology of paraffin crystals were reduced and changed from plates to needles.

Keywords comb-polymers styrene paraffin crystallization flow ability

Corresponding Author(s): XU Jun,Email:wiselyxj@126.com

Issue Date: 05 March 2011

Cite this article:

Jingjing XU,Jun XU,Jie SUN, et al. Synthesis of poly(maleic acid alkylamide-co-α-olefin-co-styrene) and their effect on flow ability of oils[J]. Front Chem Sci Eng, 2011, 5(1): 74-78.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-010-0542-5
https://academic.hep.com.cn/fcse/EN/Y2011/V5/I1/74

Fig.1 Synthesis of (a) poly(maleic anhydride---olefin--styrene) and (b) poly(maleic acid alkylamide---olefin--styrene amide)

Tab.1 The molecular weight of MASCs measured by GPC

Fig.2 H NMR spectrum of MASC

Fig.3 FTIR spectrum of MASC

Fig.4 Yield stresses of model waxy oil and crude oil with and without MASC0.5

Fig.5 Effect of the concentration of MASCs on the yield stress of model waxy oil

Fig.6 Effect of MASCs on the yield stress of model waxy oil and mix oil

Fig.7 Optical micrographs of crystals from 4 wt-% hexatriacontane (C36). (a) C36; (b) C36+ 0.1% MASC0.5; (c) C36+ 0.1% MASC0.75; (d) C36+ 0.1% MACSC1.0

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