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首页> 外文期刊>Journal of Applied Polymer Science >Composite sheets with biodegradable polymers and paper, the effect of paper strengthening agents on strength enhancement, and an evaluation of biodegradability
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Composite sheets with biodegradable polymers and paper, the effect of paper strengthening agents on strength enhancement, and an evaluation of biodegradability

机译：具有可生物降解的聚合物和纸张的复合片材，纸张增强剂对强度增强的作用以及可生物降解性的评估

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摘要

Composite sheets composed of biodegradable polymers (BP) and paper were prepared, and their physical and biodegradable properties were investigated. The paper sheets were soaked in BP emulsions and cured at 100 degrees C for 20 min. The wet strength of composite sheets with the same basis weight increased significantly with increasing BP content, although dry strength increased only moderately. A 0.5% addition of a common wet paper-strengthening agent, poly(amidoamine-epichlorohydrin) (PAE) resin, enhanced the wet strength, which reached 9.3 MPa, of composite sheets consisting of a BP: paper ratio of 20:80. Further enhancement was achieved by the addition of polyvinylamines (PVAm). The wet tensile strength of composite sheets consisting of BP and paper (20: 80) increased by 27% with the addition of 0.2% PVArn and 0.5% PAE, whereas it was enhanced by only 3-4% with the addition of 0.7% PAE. The biodegradability of the composite sheets was somewhat retarded by the addition of PAE and PVAm. However, a 90% weight loss was observed 60 days after placing composite sheet samples in soil. A similar weight loss was observed after 45 days for composites without additives and after 30 days for base paper alone. (c) 2005 Wiley Periodicals, Inc.
机译：制备了由生物可降解聚合物（BP）和纸组成的复合片材，并对其物理和生物降解性能进行了研究。将纸张浸泡在BP乳液中，并在100摄氏度下固化20分钟。具有相同基重的复合片材的湿强度随BP含量的增加而显着增加，尽管干强度仅适度增加。加入0.5％的普通湿纸增强剂聚（酰胺基胺-表氯醇）（PAE）树脂，可以使BP：纸比为20:80的复合板的湿强度达到9.3 MPa。通过添加聚乙烯胺（PVAm）可以实现进一步的增强。由BP和纸制成的复合片材的湿拉伸强度（20：80）在添加0.2％PVArn和0.5％PAE的情况下提高了27％，而在添加0.7％PAE的情况下仅提高了3-4％ 。复合片材的生物降解性由于添加了PAE和PVAm而有所延迟。然而，将复合片状样品置于土壤中60天后观察到90％的重量减轻。对于不含添加剂的复合材料，在45天后和仅对原纸进行30天后，观察到类似的重量减轻。 （c）2005年Wiley Periodicals，Inc.

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