楠竹预水解硫酸盐法制浆工艺

以楠竹为原料生产竹浆粕,对水预水解和硫酸盐法蒸煮的工艺条件进行优化。结果表明:水预水解阶段最优工艺条件为P因子1000;硫酸盐蒸煮阶段最优工艺条件为H因子1000、用碱量17%(Na2O计)、硫化度20%。按此工艺条件所得的浆粕α-纤维素含量94.55%,黏度1096mL·g-1,细浆得率33.59%,卡伯值10.76,聚戊糖含量4.81%。     

竹丝绸织物服用性能研究

探讨了竹原纤维、竹浆纤维纱线与蚕丝交织的竹丝绸织物的服用性能.结果表明:竹浆纤维竹丝绸织物和竹原纤维竹丝绸织物均有华丽的光泽,白度较高;竹丝绸织物具有良好的吸湿性、透湿性、抗静电性、透气性;竹浆纤维竹丝绸织物相对柔软、褶皱弹性相对较好;竹原纤维竹丝绸织物挺括度很高,褶皱弹性相对较差.     

推行竹浆纸一体化实现竹子造纸持续发展

本文分析了我国竹子制浆造纸的发展现状,提出了推行竹浆纸一体化发展的必要性,并给出了竹浆纸一体化发展的建议。实施竹浆纸一体化是一项综合工程,政府职能部门应因地制宜科学合理进行产业布局,制订相关政策、协调各方关系;企业应树立竹浆纸一体化发展意识,开展机制体制创新,多方合作构建多元模式的竹浆纸一体化项目;金融机构和科研院所也应积极行动起来,为竹浆纸一体化发展开展精准有效的服务。     

非木纤维石灰回收回转窑的设计和运行

介绍了国内第一套非木纤维石灰回收回转窑的设计及运行情况,对国内非木纤维制浆白泥的回收应用有着现实的意义。     

棉/天丝/竹纤维混纺织物的生产实践

文章探讨了竹纤维/天丝/棉混纺织物的生产工艺,结合三种原料的特点,确定纺纱工艺流程,对纺纱、织造各工序采用的主要工艺措施进行了合理地选择与分析。     

两台竹浆碱回收锅炉NOx、SO2排放的探讨

根据两台竹浆碱回收锅炉的实际运行情况,对其结构与运行对污染物排放的影响进行了比较、分析。     

竹材液化墙体泡沫材料的阻燃改性

为提高竹材液化产物所制备的高轻发泡墙体材料的防火性能，分别采用材料内部添加和表面浸泡的方法进行阻燃改性，并评价不同阻燃剂及其添加量对发泡材料阻燃性能的影响。实验结果表明：在材料内部或表面添加选择的阻燃剂不会对材料自身形貌或组分产生明显影响，对材料的力学性能亦不会造成破坏，在材料内部添加3 g膨胀型凝胶-二氧化硅/聚磷酸铵核壳阻燃剂（MCAPP）后压缩强度达到了0.37 MPa，在材料表面浸泡聚硅氧烷后压缩强度达到了0.58 MPa，同时能提高材料的阻燃性能，在材料内部添加聚磷酸铵（M-APP）后极限氧指数提高到33.2%，比改性前提高3%。在材料表面浸泡膨胀型壳聚糖-蒙脱土-聚磷酸铵（CMAp）后点燃时间明显延长，极限氧指数最高达到了31.5%。     

Novel silicon-contained lignin-based carbon fibers derived from bamboo pulping black liquor with improved electrochemical performance for supercapacitors

Carbon fibers (CFs) are a promising candidate as electrode materials for flexible supercapacitors given its light weight and moderate cost. In this study, the lignin used was partially separated from kraft bamboo pulping black liquor and the higher molecular weight fraction, unavoidably contains a small amount of silicon compounds, so named silicon-contained lignin. Novel CFs were prepared using commercial polyacrylonitrile (PAN) and the lignin by electrospinning and further carbonization. Even in the presence of silicon compounds, the fibrous morphology of precursor fibers was significantly good, and the CFs with uniform fiber diameter and high specific surface area up to 182 m²/g were obtained with an increase in silicon-contained lignin. The CFs fabricated from silicon-contained lignin and commercial PAN had higher specific capacitance (22.20 mF/cm² at 10 mA/cm²) and superb cycling stability (94.21%) than that from silicon-free lignin or pure PAN separately.     

Prediction of the colorimetric parameters and mass loss of heat‐treated bamboo: Comparison of multiple linear regression and artificial neural network method

In this study, the colorimetric parameters (L*, a*, b*) and mass loss of heat‐treated bamboo were investigated, and the obtained results were modeled by using two methods: multiple linear regression (MLR) and artificial neural network (ANN). First, bamboo samples were exposed to heat treatment at different temperatures (110°C, 140°C, 170°C, and 200°C) and durations (15, 30, 45, 60, 75, 90, and 115 minutes) in a laboratory oven. Then, the colorimetric parameters (L*, a*, b*) and mass loss of each sample were measured after each period of heat treatment. All data were modeled by using two methods separately for each parameter and the performances of these proposed methods were compared. It was found that color change and mass loss increased with increasing temperature and duration of heat treatment. Mean absolute percentage error (MAPE) values of all obtained MLR ranged from 0.64% to 10.63%, while the all MAPE values of ANN were found to be lower than 1.5%. Based on these results, it can be said that MLR and ANN could be used to evaluate the changes on the selected properties of heat‐treated bamboo samples. On the other hand, it should be emphasized that the ANN gave more accurate results than the MLR method because of its learning capability.     

Eco-friendly polyvinyl alcohol (PVA)/bamboo charcoal (BC) nanocomposites with superior mechanical and thermal properties

Carbon-based nanofillers, such as carbon nanotubes (CNTs) and graphene sheets are considered as effective nanoreinforcements due to their unique structures and material performance. However, the utilisation of such nanofillers can be hindered owing to a high level of nanotoxicity via human inhalation and high material cost for CNTs, as well as the tendency to form agglomerates of graphene sheets in polymer matrices. Bamboo charcoals (BCs) are eco-friendly and sustainable carbon-based particles, which possess good affinity with polyvinyl alcohol (PVA), one of popular water soluble biopolymers, to achieve excellent properties of PVA/BC nanocomposites. In particular, porous structures of BC particles enable polymeric molecules to easily penetrate with the strong internal bonding. In this study, fully eco-friendly PVA/BC nanocomposite films were successfully fabricated using a simple solution casting method to achieve the high dispersibility of BCs. With the inclusion of only 3 wt% BCs, tensile modulus and tensile strength of PVA/BC nanocomposite films were enhanced by 70.2 and 71.6%, respectively, when compared with those of PVA films. Better thermal stability is manifested for resulting nanocomposite films as opposed to that of pristine PVA, which is evidenced by the maximum increase of 17.8% in the decomposition temperature at the weight loss of 80%. It is anticipated that BCs can compete against conventional carbon-based nanofillers with a great potential to be developed into eco-friendly nanocomposites used for thin-film packaging application.