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Journal articles
Open Access
Impact of wood chip leaching pretreatment on wood chemical composition 15-Jan-09

Impact of wood chip leaching pretreatment on wood chemical composition, TAPPI JOURNAL January 2015

Journal articles
Open Access
Recovery boiler sootblowers: History and technological advances 15-Jan-51

Recovery boiler sootblowers: History and technological advances, TAPPI JOURNAL January 2015

Journal articles
Open Access
New challenges regarding nonprocess elements in the liquor and lime cycle, TAPPI JOURNAL July 2015

New challenges regarding nonprocess elements in the liquor and lime cycle, TAPPI JOURNAL July 2015

Journal articles
Open Access
Upgrading aeration system performance in secondary basins treating pulp and paper wastewater: A review, TAPPI JOURNAL June 2015

Upgrading aeration system performance in secondary basins treating pulp and paper wastewater: A review, TAPPI JOURNAL June 2015

Journal articles
Open Access
2015 TAPPI Centennial Celebration, TAPPI JOURNAL 2015 March - 15MAR100

2015 TAPPI Centennial CelebrationHonoring Our Past, Inspiring Our Future, TAPPI JOURNAL March 2015

Journal articles
Open Access
Review of currently available technology for the conversion of woody biomass o value-added products 15MAR160

Review of currently available technology for the conversion of woody biomass to value-added products, TAPPI JOURNAL March 2015

Journal articles
Open Access
Flippr° â?? an industrial research project in Austria, TAPPI JOURNAL 2015 March - 15MAR209

Flippr° â?? an industrial research project in Austria, TAPPI JOURNAL 2015 March - 15MAR209

Journal articles
Open Access
Hardwood pulping kinetics of bulk and residual phases, TAPPI JOURNAL October 2015

Hardwood pulping kinetics of bulk and residual phases, TAPPI JOURNAL October 2015

Journal articles
Open Access
Quantification of lignin-carbohydrate complexes in hardwood pulps, Part 2: Effects of bleaching chemicals, TAPPI JOURNAL October 2015

Quantification of lignin-carbohydrate complexes in hardwood pulps, Part 2: Effects of bleaching chemicals, TAPPI JOURNAL October 2015

Journal articles
Magazine articles
Open Access
Preparation of regenerated cellulose from rice straw lignocellulosic waste and its use for reinforced paper products, TAPPI Journal July 2021

ABSTRACT: Rice straw waste is a lignocellulosic waste produced by farmers in large quantities. In this study, regenerated cellulose (RC) from rice straw was prepared by dissolving rice straw holocellulose (HC) in NaOH/Urea/Thio-urea/Water solution by the freeze-thawing process. The crystallinity index of RC was calculated at 31%, which is out of the crystallinity range of 39%•69% that has been previously suggested.The study indicated that the RC is amorphous with a low degree of polymerization (638) and higher hydroxyl group content as compared to HC. The fiber length of RC was found to be 26.7% shorter; however, the width of RC was 21.2% higher as compared to HC. Reduced kinked fiber content was observed in the fraction of RC (18.3%) as compared with HC (39.1%), and a higher curl index of fiber was observed more so in HC (10.5%) than RC (5.6%). Because of the regeneration process, the fiber length was reduced and a fines element content of about 96% was observed in RC compared to the initial fines content of HC (56.9%). Irrespective of the high fines element content of RC, the composite paper of rice straw bleached pulp and RC fibers was developed with an increase in the tensile index from 41.4 N.m/g to 71.2 N.m/g and an increase in the burst index from 4.7 kPa.m2/g to 5.3 kPa.m2/g with the addition of 5% and 15% RC, respectively. However, enhanced tear index of paper was observed up to 5% and then it declined upon further addition of RC. The study revealed that regenerated cellulose can be used as a strength additive to overcome the shortcomings of low mechanical properties in paper products.

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