乙烯基吡咯烷酮/乙烯基咪唑聚合物的制备及其防沾染性

doi:10.3969/j.issn.2097-2806.2023.06.007

摘要/Abstract

摘要：

以N-乙烯基吡咯烷酮（NVP）和N-乙烯基咪唑（NVI）为原料合成了三种不同单体比例的N-乙烯基吡咯烷酮/N-乙烯基咪唑聚合物（VP/VI聚合物），采用乌氏黏度计、傅里叶变化红外光谱（FT-IR）、凝胶渗透色谱（GPC）对聚合物的结构进行了表征，结果表明三种聚合物的K值均在30左右，重均分子量（M_W）分别为37 848，22 656，8 111。通过紫外可见光光谱（UV-Vis）和防沾染实验对三种VP/VI聚合物的防沾染性进行测试，结果表明，加入VPVI-P，VPVI-5和VPVI-7后，直接大红染液的最大吸收波长（λ_max）从499 nm分别升至520，527和531 nm，λ_max处的吸光度从0.30升至0.39左右；直接深蓝染液的λ_max从558 nm升至576 nm左右，λ_max处的吸光度从0.15升至0.35，三种聚合物均与直接大红、直接深蓝染料分子有明显相互作用。随着聚合物中NVI组分的增加，VP/VI聚合物的防串色性能得到提升。

关键词: 乙烯基吡咯烷酮, 乙烯基咪唑, VP/VI聚合物, 聚乙烯吡咯烷酮, 防串色

Abstract:

Three kinds of N-vinyl pyrrolidone （NVP）/N-vinyl imidazole （NVI） polymers （VP/VI polymers） with different monomer ratios were synthesized, and all samples were characterized and analyzed by Ubbelohde viscometer, Fourier transform infrared spectroscopy （FT-IR） and gel permeation chromatography （GPC）. The results showed that the K values of the three copolymers were around 30, and the weight average molecular weights （M_W） of the three copolymers were 37 848, 22 656 and 8 111, respectively. The anti-staining properties of the VP/VI polymers were tested by ultraviolet-visible spectrophotometer （UV-vis） and anti-staining experiments. With the addition of VPVI-P, VPVI-5 and VPVI-7,the maximum absorption wavelength （λ_max） of the Direct Red 28solution was red shifted from 499 nm to 520 nm, 527 nm and 531 nm, respectively. The absorbance value at λ_max was increased from 0.30 to 0.39 as the mass concentration of the VP/VI polymer was increased from 0 g/L to 5.0×10^-2 g/L. The λ_maxof the Direct Dark Blue solution was red shifted from 558 nm to approximately 576 nm and the absorbance at λ_max was increased from 0.15 to around 0.35 as the mass concentration of the VP/VI polymer was increased. It indicated obvious interactions between the VP/VI polymers and the dye molecules （Congo red and direct blue）. It showed better performance in the anti-staining experiments as the content of NVI component was increased in the polymers.

Key words: N-vinyl pyrrolidone, N-vinyl imidazole, VP/VI polymer, polyvinylpyrrolidone, anti-staining

中图分类号:

TQ649

张森林, 孙旭东, 张凌飞, 王云. 乙烯基吡咯烷酮/乙烯基咪唑聚合物的制备及其防沾染性[J]. 日用化学工业（中英文）, 2023, 53(6): 658-664.

Zhang Senlin, Sun Xudong, Zhang Lingfei, Wang Yun. Preparation and anti-staining properties of N-vinyl pyrrolidone/N-vinyl imidazole polymers[J]. China Surfactant Detergent & Cosmetics, 2023, 53(6): 658-664.

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样品代号	K值	m（NVP）∶m（NVI）	M_n	M_w	M_w/M_n
VPVI-P	31.0	10∶0	10 548	37 848	3.59
VPVI-5	29.9	5∶5	8 446	22 656	2.68
VPVI-7	31.6	3∶7	5 094	8 111	1.59