Abstract

The cellulose diacetate films derived from the commercial cellulose acetate or some biomass materials have a high cost and the synthesis is complex. It is meaningful to develop a green and low-cost method to prepare cellulose diacetate films and regulate their properties. In addition, it is necessary to recycle the wastes for reuse. Thus, waste cigarette filters were used as the source for preparing the cellulose diacetate films and glycerol as the plasticizer to improve the comprehensive properties in this paper. Hydrogen bonds were formed between glycerol and acetate fibers, and the glass transition temperature of samples decreased after adding glycerol. Moreover, the water contact angle decreased from 97.6° to 19.2° and the water vapor permeability increased from 1.585 × 10⁻¹² to 7.797 × 10⁻¹² with the increasing of glycerol content, demonstrating that the hydrophilic property of as-prepared films was improved. However, excessive content of glycerol decreased the mechanical properties of films. When the content of glycerol was 30%, as-prepared film with an elongation at break of 24% had the highest tensile strength of 24.3 MPa. When the content of glycerol exceeded 30%, the tensile strength declined sharply. Therefore, this paper proposed a simple and low-cost method to convert waste cigarette filters into cellulose diacetate films which can be applied in the packaging or engineering films.

Graphic abstract

中文翻译：

---

废香烟滤嘴衍生的二醋酸纤维素膜的结构和性能

摘要

衍生自商业乙酸纤维素或某些生物质材料的纤维素二乙酸酯膜成本高且合成复杂。开发一种绿色且低成本的方法来制备纤维素二乙酸酯薄膜并调节其性能是有意义的。另外，有必要将废物循环再利用。因此，废香烟过滤嘴被用作制备二乙酸纤维素膜的来源，甘油被用作增塑剂，以改善本文的综合性能。甘油和醋酸纤维之间形成氢键，加入甘油后样品的玻璃化转变温度降低。此外，水接触角从97.6°减小到19.2°，水蒸气渗透率从1.585×10 ^-12增加到7.797×10 ^-12随着甘油含量的增加，表明所制备的膜的亲水性得到改善。但是，甘油含量过多会降低薄膜的机械性能。当甘油的含量为30％时，制得的膜的断裂伸长率为24％，其最高拉伸强度为24.3MPa。甘油含量超过30％时，抗拉强度急剧下降。因此，本文提出了一种简单且低成本的方法，将废香烟过滤嘴转化为可用于包装或工程薄膜的二乙酸纤维素薄膜。

图形摘要