天然胶乳是一种由橡胶粒子在乳清介质中分散的胶体溶液。一般认为橡胶粒子由橡胶烃组成,其外围有一层由类脂物、蛋白质及其他非橡胶成份所构成的亲水性“保护层”。橡胶烃是非极性物质,蛋白质是典型的两性物质,天然胶乳的等电点为pH4.5左右,而胶乳蛋白质的等电点大都在pH4～5之间,因而认为橡胶粒子的电荷是来源于被吸附在粒子表面的蛋白质。橡胶粒子带有负 Natural latex is a colloidal solution of rubber particles dispersed in a whey medium. Rubber particles are generally considered to be composed of rubbery hydrocarbons with a hydrophilic “protective layer” of lipids, proteins and other non-rubbery ingredients on the periphery. Rubber hydrocarbon is a non-polar material, the protein is a typical amphoteric substance, the natural point of the latex is about pH4.5, while the isoelectric point of the latex protein mostly in the pH4 ~ 5, so that the charge of the rubber particles are derived from Protein adsorbed on the particle surface. Rubber particles with negative