Abstract The paper presents the studies on the optimization of the free-radical graft reaction applying the “grafting from” method of terpene acrylate monomers prepared from two geometric isomers of terpene alcohol such as trans-3,7-dimethyl-2,6-octadien-1-ol (geraniol) and cis-3,7-dimethyl-2,6-octadien-1-ol (nerol) with potato starch and the evaluation of some physico-chemical properties of the obtained materials. Based on the overall conversion (%TC) values, it was confirmed higher reactivity of neryl acrylate than geranyl acrylate in the grafting process with starch. The maximum of the grafting percent (%G) was found to be 42.8% ± 0.4 for neryl acrylate using 2 w% of an initiator, starch to monomer ratio 1:1 and the reaction time 180 min. However, the maximum of the %G for geranyl acrylate was 35.6 ± 0.4 for 2.5 wt% of an initiator, starch to monomer ratio 1:1.5 during 210 min. ATR-FTIR and 13C CP/MAS NMR analyses affirmed the structure of novel, amphiphilic graft copolymers. SEM confirmed the creation of the materials with irregular but different morphology. Generally, starch-g-poly(geranyl acrylate) copolymer (%G 35.6 ± 0.4) was characterized by lower moisture absorption, lower swelling in polar and non-polar solvents, higher chemical resistance towards less alkaline, acidic and neutral conditions, higher glass transition temperature (Tg) than starch-g-poly(neryl acrylate) copolymers (%G 35.3 ± 0.2 and 42.8% ± 0.4). As it was proved the differences in some physico-chemical properties between those two types of the copolymers were due to their structure. However, both types of the copolymers exhibited a comparable thermal stability as it was affirmed by the TG studies. Moreover, according to the TG/FTIR results, similar gaseous products were created under the heating of the studied copolymers which was due to their comparable chemical structures.

中文翻译：

---

使用由萜醇的两种几何异构体制备的丙烯酸酯单体获得的新型淀粉-g-共聚物

摘要 本文介绍了由萜烯醇的两种几何异构体如反式-3,7-二甲基-2,6-辛二烯制备的萜烯丙烯酸酯单体采用“接枝自”法优化自由基接枝反应的研究。 -1-ol（香叶醇）和顺式-3,7-二甲基-2,6-octadien-1-ol（橙花醇）与马铃薯淀粉以及所得材料的一些理化性质的评价。基于总转化率 (%TC) 值，证实在与淀粉的接枝过程中，丙烯酸橙花酯比丙烯酸香叶酯具有更高的反应性。发现使用 2 w% 引发剂、淀粉与单体比率 1:1 和反应时间 180 分钟的丙烯酸橙花酯的最大接枝百分比 (%G) 为 42.8% ± 0.4。然而，对于 2.5 wt% 的引发剂，丙烯酸香叶酯的 %G 最大值为 35.6 ± 0.4，在 210 分钟内淀粉与单体的比例为 1:1.5。ATR-FTIR 和 13C CP/MAS NMR 分析证实了新型两亲接枝共聚物的结构。SEM 证实了具有不规则但不同形态的材料的产生。通常，淀粉-g-聚（丙烯酸香叶酯）共聚物（%G 35.6 ± 0.4）的特点是吸湿性较低，在极性和非极性溶剂中溶胀较低，对碱性、酸性和中性条件的耐化学性更高，玻璃化转变温度 (Tg) 比淀粉-g-聚（丙烯酸橙酯）共聚物（%G 35.3 ± 0.2 和 42.8% ± 0.4）高。事实证明，这两种共聚物之间的某些物理化学性质的差异是由于它们的结构造成的。然而，正如 TG 研究证实的那样，两种类型的共聚物都表现出相当的热稳定性。