In the recent time mathematical model is commonly used to explain complicated physical phenomenon so that people can understand the system or the behavior of the system easily. Biopolymer is very useful and beneficial in various fields such as Medical, Agriculture, Bioengineering and so on. However, the complexity of the process of biodegradation makes it difficult to optimize the design of polymers application. Chemical reactions such as degradation of biopolymer usually take years and it costs a lot of money due to the numerous experiments sets used. Therefore, the best possible way to enhance the design capabilities of the biodegradable polymers is through modelling in this work a fuzzy logic theory on modelling is used to find the effect of temperature on polymers biodegradation. Mass diffusivity of the polymer with respect to time and rate of release during the linear period based on different alphas are simulated using Matlab and fuzzy modeling and presented in the form of figures. Copyright © EM International.