十一烯酸基乳化剂制备及应用研究

doi:10.3969/j.issn.1673-5854.2019.06.004

Biomass Chemical Engineering ›› 2019, Vol. 53 ›› Issue (6): 22-26.doi: 10.3969/j.issn.1673-5854.2019.06.004

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Preparation and Application of Emulsifier Based on Undecylenic Acid

Yonghe ZHANG^1,²,Gaowei FU^1,²,Liwei JIN^1,*()

1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province
2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China

Received:2018-11-15 Online:2019-11-30 Published:2019-12-10
Contact: Liwei JIN E-mail:liwei-jin@163.com
Supported by:
国家重点研发计划资助项目(2017YFE0106800)

Abstract

Abstract:

Undecylenic acid/maleic anhydride-dodecanol (UMA-DA) polymer was prepared by esterification reaction using dodecanol(DA) and undecylenic acid(UA)/maleic anhydride(MAH) as copolymer.The polymer is used as an emulsifier in the emulsion polymerization of UA and methyl methacrylate(MMA). FT-IR analysis showed that the self-made undecylenic acid/maleic anhydride(UMA) copolymer acted with DA by esterification of an acid anhydride with a hydroxyl group.The proton signal at δ 3.2-3.4 of —O—CH₂—in ¹H NMR show that UMA-DA copolymer was prepared successfully.The critical micelle concentration(CMC) value of UMA saponification was determined by surface tension method. The CMC value of UMA-DA was 9.6 g/L, and the surface tension γ_CMC was 23.04 mN/m. The γ_CMC value of UMA-DA is much lower than that of pure water(71.97 mN/m). The particle size and particle size distribution index(PDI) increased, butthe gel rate gradually decreasedwith the increase of UMA-DA dosage in emulsion polymerization. The emulsion is relatively stable, and the total monomer conversion rate reaches 98.1% when the amount of the self-made emulsifier UMA-DA is 10% of the total monomer and the ratio of UA to MMA is 10 : 90.

Key words: emulsifier, undecylenic acid, maleic anhydride, dodecanol

CLC Number:

TQ35
TQ325

Yonghe ZHANG,Gaowei FU,Liwei JIN. Preparation and Application of Emulsifier Based on Undecylenic Acid[J]. Biomass Chemical Engineering, 2019, 53(6): 22-26.

Figures/Tables 6

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Table 1

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References 11

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UA和MMA质量比 mass ratio of UA and MMA	UMA-DA用量/% dosage of UMA-DA	总单体转化率/% conversion	凝胶率/% gel fraction	平均粒径/nm average size	PDI	M_n
	6	—	—	—	—	—
30:70	10	87.8	0.24	116	0.050	2.36×10⁵
	12	84.7	0.08	168	0.134	2.01×10⁵
	6	90.5	2.01	132	0.143	1.70×10⁵
20:80	10	92.2	0.12	148	0.177	1.99×10⁵
	12	89.6	0.01	166	0.158	2.09×10⁵
	6	85.2	1.40	165	0.049	2.60×10⁵
10:90	10	98.1	0.14	155	0.085	2.75×10⁵
	12	97.1	0.04	173	0.120	2.37×10⁵

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Preparation and Application of Emulsifier Based on Undecylenic Acid

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