Clinical Medicine and Nursing

Preparation and Process Optimization of Eucommia Gutta percha Based Shape Memory Materials



The sulfur system of conventional unsaturated rubber can be used to vulcanize and cross link Eucommia ulmoides gum (EUG) moderately and destroy its partial crystallization. By adjusting the rati o of crystallinity and cross linking degree, EUG can be made into thermotropic shape memory materials which respond to different temperatures, and the optimal formula was selected by orthogonal design. The EUG based shape memory materials were prepared wit h this formula have a thermal stimulation memory execution temperature close to the normal body temperature and good shape recovery capability, which will be expected to be used as a pressure sensitive adhesive material for transdermal drug delivery system s (TDDS) under human physiological conditions.


eucommia ulmoides gum; shape memory material; process optimization

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Zare M, Prabhakaran M P, Parvin N, et al., 2019. Thermally-induced two-way shape memory polymers: mechanisms, structures, and applications. Chemical Engineering Journal, 374: 706-720.

Tsujimoto T, Toshimitsu K, Uyama H, et al.,2014. Maleated trans-1,4-polyisoprene from eucommia ulmoides oliver with dynamic network structure and its shape memory property. Polymer, 55 (25): 6488-6493.

Ferrand H L, Bacha A, 2021. Discovery and rediscovery of gutta percha, a natural thermoplastic, MRS Bulletin, 46 (1): 84-85.

Kang H, Gong M, Xu M, et al., 2019. Fabricated biobased Eucommia ulmoides gum/polyolefin elastomer thermoplastic vulcanizates into a shape memory material. Industrial & Engineering Chemistry Research, 58 (16): 6375-6384.

Zhang H, Ma C, Sun R, et al., 2019. Sustainable elastomer of triazolinedione-modified Eucommia ulmoides gum with enhanced elasticity and shape memory capability. Polymer. 184: 121904.

Deng X Y, Li Z G, Huang Y X, et al., 2017. Improving mechanism and effect analysis of sulfurated and grafted Eucommia ulmoides gum modified rubber asphalt. Construction and Building Materials, 148: 715-722.

Phumnok E, Boonphang J, Bourkaew O, 2019. Effect of filler types on properties of the natural rubber closed cell foam. Applied Mechanics and Materials, 886: 213-218.

Carmen, Lee, Ming, et al., 2020. Talc filled polylactic-acid biobased polymer composites: Tensile, thermal and morphological properties. SN Applied Sciences, 2 (3): 1-6.



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