Citation: CHI Yongmei, XU Songjie, CAO Yuting, DONG Jian. Synthesis and Properties of Novel Amphiphilic Polyamides[J]. Chinese Journal of Applied Chemistry, ;2017, 34(3): 269-275. doi: 10.11944/j.issn.1000-0518.2017.03.160214 shu

Synthesis and Properties of Novel Amphiphilic Polyamides

CHI Yongmei ^a,b ,
XU Songjie ^b ,
CAO Yuting ^a ,
DONG Jian ^a,b,*,,

a.
School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
b.
School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang 312000, China

Corresponding author: DONG Jian, jiandong@usx.edu.cn
Received Date: 23 May 2016
Revised Date: 20 July 2016
Accepted Date: 19 August 2016

Fund Project: the Natural Science Foundation of Zhejiang Province No.LY12E3001the National Undergraduate Innovative Training Project No.201310349004Supported by the National Natural Science Foundation of China No.21674063

Figures(5)

To provide a theoretical basis for designing natural gas hydrate inhibitors and understanding the inhibition mechanism, and to analyze the nature and characteristics of the interactions between amphiphilic polyamides and water, water soluble poly(1,3-propylene citramide) was synthesized and based upon which, a new amphiphilic polymer was prepared by the modification with cyclohexyl isocyanate. The structure and properties of the product were characterized by proton nuclear magntic resonance spectroscopy, gel permeation chromatography and differential scanning calorimetry. The results show that the modified polymer forms nonfreezable bound water(NFBW) and the amount of the NFBW is twice the level in traditional kinetic gas hydrate inhibitors such as poly(N-vinylcaprolactam) or poly(N-vinylpyrrolidone). The specific heat capacities of water in the modified polymer increases remarkably by 36%. The hydrophobic interaction force between the polymer and water is enhanced, resulting in significant hydrophobic hydration restricted in the polymer. The modified polymers show strong hydrophobicity, leading to high levels of tightly bound water molecules and providing a necessary environment for increasing amount of NFBW.
- water soluble polymer,
- hydrophobic force,
- non-freezable bound water,
- specific heat capacity
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