Biodegradable pipe as well as preparation method and application thereof

The invention relates to a biodegradable pipe, which comprises at least one cellulose acetate or a derivative thereof, and at least one plasticizer capable of reducing the hot working temperature of the cellulose acetate. The cellulosic material includes cellulose acetate having a degree of substitution of 1.5 to 2.8 or a derivative thereof. The preparation method comprises the following steps: mixing crushed cellulose acetate and a plasticizer, performing high temperature extrusion, and cutting the extruded mixture to prepare the thermoplastic polymer master batch; then performing blow molding the pipe with the controllable length. The biodegradable pipe can be used for cigarette filter sticks or used as a beverage straw. Cellulose acetate and a degradable plasticizer are utilized in thepipe, wherein the material can be degraded in the natural environment, so that environmental pollution is effectively reduced. 一种可生物降解的管材，其中包括：至少一种醋酸纤维素或其衍生物；至少一种可以降低醋酸纤维素热加工温度的塑化剂。配方中包括的纤维素材料包括取代度为1.5到2.8的醋酸纤维素或者其衍生物。制备方法包括将