Optimization of the Green Fibre Paper Film Preparation Process Based on Box–Behnken Response Surface Methodology

Abstract

To improve the utilization rate of flax straw and the clean treatment of livestock manure, an experimental study was conducted on the process and performance of making fibre paper films by mixing cow dung and flax straw fibre. Cow dung and flax straw were used as the main raw materials, and functional additives were not added. The whole technological process of the pretreatment, the beating process, the determination of the beating degree, the basis weight of the paper, papermaking, drying, sample cutting, and the determination and analysis of the related mechanical properties of the film-making materials were studied. In this study, the Box–Behnken experimental design principle in the response surface methodology was adopted, and the effect of each factor on the tensile strength and tear strength of fibre paper film made of mixed fibres was determined using the combined experimental design comprising four factors and three levels centres. The results showed that the optimum technological parameters were as follows: the beating degree of the cow dung fibre was 37 °SR, the beating degree of the flax straw fibre was 85 °SR, the paper basis weight was 80 g/m2, and the addition of flax straw fibre was 65%. At a drying temperature of 80 °C and a drying time of 8 min, under the conditions of the hybrid fibre paper film placed in the laboratory environment (humidity of 30%~40%, temperature of 18 °C) for 24 h, the measured tensile strength was about 8.26 MPa, and the tear strength was about 19.91 N/mm. This study provides a reference that can be used for the further study of fibre paper film.

Green Development of Natural Fibre-Based Paper Mulch from Recyclable Cow Dung and Flax Straw Waste

“…The paper-forming machine (TD10-200 Xianyang Tongda Light Industry Equipment Co., Ltd., Xianyang, Shaanxi Province, China) was used to prepare the samples at a drying temperature of 80 • C. In our previous work, we used the four-factors and three-levels centre combination test method to confirm and optimise the parameters of the preparation process. The optimal process parameters were determined: the beating degree of cow dung fibres was 37 • SR, the beating degree of flax straw fibres was 85 • SR, the paper basis weight was 80 g/m 2 , and the addition of flax straw fibres was 65% [32]. We prepared samples using the rapid-Kothen method [33] under the same experimental conditions and let the prepared paper mulch stand for 24 h at a room temperature of 25 • C and a relative humidity of 30~40% before conducting performance measurements.…”

“…firm and optimise the parameters of the preparation process. The optimal process parameters were determined: the beating degree of cow dung fibres was 37 °SR, the beating degree of flax straw fibres was 85 °SR, the paper basis weight was 80 g/m 2 , and the addition of flax straw fibres was 65% [32]. We prepared samples using the rapid-Kothen method [33] under the same experimental conditions and let the prepared paper mulch stand for 24 h at a room temperature of 25 °C and a relative humidity of 30~40% before conducting performance measurements.…”