陈思瑶,管榆昕,刘颖.储存温度对高含水率纸浆纤维降解机制及其纸张性能的影响[J].中国造纸,2026,45(4):68-79 本文二维码信息
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储存温度对高含水率纸浆纤维降解机制及其纸张性能的影响
Effects of Storage Temperature on the Degradation Mechanism and Paper Properties of Pulp Fibers with High Moisture Content
收稿日期：2026-01-09  修订日期：2026-02-14
DOI：10.11980/j.issn.0254-508X.2026.04.010
关键词:  储存温度  高含水率  纸浆纤维  降解机制
Key Words:storage temperature  high moisture content  pulp fibers  degradation mechanism
基金项目:
作者单位邮编
陈思瑶* 1华南理工大学造纸与污染控制国家工程研究中心,广东广州,510640
2华南理工 大学轻工科学与工程学院,广东广州,510640 		510640
管榆昕 1华南理工大学造纸与污染控制国家工程研究中心,广东广州,510640
2华南理工 大学轻工科学与工程学院,广东广州,510640 		510640
刘颖* 1华南理工大学造纸与污染控制国家工程研究中心,广东广州,510640
2华南理工 大学轻工科学与工程学院,广东广州,510640 		510640
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摘要:本研究探讨了不同储存温度对3种高含水率纸浆（硫酸盐针叶木浆、硫酸盐竹浆及碱法韧皮浆）及其纸张性能的影响。结果表明，在为期90天的储存期内，高温显著加速了纸浆纤维的降解，具体表现为纤维素平均聚合度急剧下降，结晶度呈先升高后降低的趋势；纸浆pH持续下降，下降速度为竹浆>针叶木浆>韧皮浆；纸浆纤维本身的力学性能严重劣化，其湿法零距抗张指数下降速率为韧皮浆>针叶木浆>竹浆。相应地，纸张的物理性能也显著降低，不同类型纸浆对高温高湿的敏感性存在差异。相比之下，低温储存有效延缓了纸浆纤维的降解，在5 ℃储存下，纸浆湿法零距抗张指数下降率均不超过12%，且较好地维持了纤维间结合力。冷冻条件下纤维素平均聚合度未显著降低、结晶度小幅提升，但纸浆及纸张物理性能明显下降，且降幅在后期趋于稳定。
Abstract:This study explored the effects of different storage temperatures on three types of high moisture content pulps (kraft softwood pulp, kraft bamboo pulp, and alkali-processed bast pulp) and the paper properties. The results showed that during the 90-day storage period, high temperatures significantly accelerated the degradation of pulp fibers. Specifically, the average degree of polymerization of cellulose decreased sharply, and the crystallinity initially increased and then decreased. The pH of the pulp continued to decline, with the decline rate following the order of bamboo pulp>softwood pulp>bast pulp. The mechanical properties of the pulp fibers themselves severely deteriorated, with the decline rate of the wet zero-span tensile index following the order of bast pulp>softwood pulp>bamboo pulp. Correspondingly, the physical properties of the resulting paper also significantly decreased, and there were differences in the sensitivity of different types of pulps to high temperature and humidity. In contrast, low-temperature storage effectively delayed the degradation of pulp fibers. When stored at 5 ℃, the decline rate of the wet zero-span tensile index of the pulp did not exceed 12%, and the inter-fiber bonding was well maintained. Under freezing conditions, the average degree of polymerization of cellulose did not significantly decrease, and the crystallinity slightly increased. However, the physical properties of the pulp and the paper significantly declined, and the decline rate tended to stabilize in the later stage.
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