| 王琰，刘星雨，刘梦洋，许盼盼，闫枫丹，李军.脱水蓖麻油/环氧大豆油基压敏胶的制备
及结构表征[J].中国油脂,2025,50(7):.[WANG Yan, LIU Xingyu, LIU Mengyang, XU Panpan,
YAN Fengdan, LI Jun.Preparation of dehydrated castor oils/epoxidized soybean oils-based pressure sensitive adhesive and its characteristics[J].China Oils and Fats,2025,50(7):.] |
| 脱水蓖麻油/环氧大豆油基压敏胶的制备
及结构表征 |
| Preparation of dehydrated castor oils/epoxidized soybean oils-based pressure sensitive adhesive and its characteristics |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240405 |
| 中文关键词: 脱水蓖麻油 环氧大豆油 马来酸酐 Diels-Alder反应 压敏胶 |
| 英文关键词:dehydrated castor oils epoxidized soybean oils maleic anhydride Diels-Alder reaction pressure sensitive adhesive |
| 基金项目:河南省留学人员科研择优资助项目（21240013）；河南工业大学粮油食品学院省部级科研平台开放课题项目（GO202306） |
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| 中文摘要: |
| 为促进非食用植物油在压敏胶行业的应用和提高植物油基压敏胶的粘接强度，首先将马来酸酐通过Diels-Alder反应嫁接到脱水蓖麻油制备脱水蓖麻油/马来酸酐加合物（DA加合物），再与环氧大豆油通过磷酸催化共聚制备脱水蓖麻油/环氧大豆油基压敏胶。以180°剥离强度和环形初粘力为评价指标，优化压敏胶的制备工艺，并对其进行表征。结果表明：脱水蓖麻油/环氧大豆油基压敏胶的最优制备条件为环氧大豆油与DA加合物质量比9∶ 2.5、松香酯添加量50%（以环氧大豆油质量计）、磷酸添加量8%（以环氧大豆油质量计）、反应温度50 ℃、反应时间5 min，在此条件下压敏胶的180°剥离强度为1.798 N/cm，环形初粘力为10.845 N；傅里叶变换红外光谱和核磁共振分析表明，DA加合物和环氧大豆油在磷酸的催化下有效发生了共聚；热重和差示扫描量热分析表明，DA加合物的引入提高了压敏胶的热稳定性，降低了其玻璃化转变温度。综上，采用非食用的蓖麻油衍生物制备的植物油基压敏胶具有较强的粘接强度。 |
| 英文摘要: |
| To promote the application of inedible vegetable oils in pressure sensitive adhesive (PSA) industry and improve the adhesion strengths of vegetable oils-based PSA, maleic anhydride was grafted into dehydrated castor oils by Diels-Alder (DA) reaction to prepare dehydrated castor oils/maleic anhydride adduct (DA adduct), followed by copolymerizing with epoxidized soybean oils (ESO) with phosphoric acid as the catalyst to prepare dehydrated castor oils/ESO-based PSA. With 180° peel strength and loop tack as evaluation indicators, preparation process of PSA was optimized, and its structure and properties were characterized. The results showed that the optimal conditions were mass ratio of ESO to DA adduct 9∶ 2.5, rosin ester dosage 50% (based on the mass of ESO), phosphoric acid dosage 8%(based on the mass of ESO), reaction temperature 50 ℃, and reaction time 5 min. Under the optimal conditions, the 180° peel strength and loop tack of PSA were 1.798 N/cm and 10.845 N, respectively. Fourier transform infrared spectroscopy and nuclear magnetic resonance analysis showed that DA adduct and ESO copolymerized effectively under the catalysis of phosphoric acid. Thermogravimetric and differential scanning calorimetry analysis showed that the introduction of DA adduct improved the thermal stability of PSA and lowered its glass transition temperature. In conclusion, a vegetable oils-based PSA with more excellent adhesion properties can be successfully prepared using derivatives of inedible castor oils. |
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