Effect of alkaline pre-treatment on physical, optical and mechanical properties of semi-chemical NSSC wheat straw pulp
In this study the effect of alkaline pretreatment with 1% NaOH on physical, optical and mechanical properties and refining of NSSC (Neutral Sulfite Semi Chemical) wheat straw pulp were investigated. The wheat straw (Zagros Sp.) was obtained from croplands Golestan province. Splinted wheat straw was...
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| Format: | Article |
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Regional Information Center for Science and Technology (RICeST)
2013-06-01
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| Series: | تحقیقات علوم چوب و کاغذ ایران |
| Subjects: | |
| Online Access: | http://ijwpr.areeo.ac.ir/article_2952_117eb88cdb53e379cc09264e9fcf69bc.pdf |
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| author | Soodeh Zhand Masieh Masoudifar Ahmad Reza Saraeian Ali Ghasemiyan |
| author_facet | Soodeh Zhand Masieh Masoudifar Ahmad Reza Saraeian Ali Ghasemiyan |
| author_sort | Soodeh Zhand |
| collection | DOAJ |
| description | In this study the effect of alkaline pretreatment with 1% NaOH on physical, optical and mechanical properties and refining of NSSC (Neutral Sulfite Semi Chemical) wheat straw pulp were investigated. The wheat straw (Zagros Sp.) was obtained from croplands Golestan province. Splinted wheat straw was pretreated with 1% NaOH(on the basis of OD weight) at 70 degrees for 30 minutes. The main pulping was performed at 160 ˚C with the fixed ratio of 5:1 Na2S03 and NaOH. After pulping defibration was done by lab-refiner to 380±25ml (CSF) and total yield and changes in Kappa was determined. Hand sheets of 60 gr. /m² were made on the basis of TAPPI standard and physical, optical and mechanical properties determined. The results show that alkaline pre-treatment has a significant effect in increasing of physical, optical and mechanical properties. Calculating primary freeness of pulps indicates that by increasing chemical compounds and NaOH, freeness decreases and that by increasing chemical compounds paper density increases, whereas yield, caliper and bulk decrease. |
| first_indexed | 2024-12-19T07:20:40Z |
| format | Article |
| id | doaj.art-c00f2ce4c16d4c7d936a80db5379a7db |
| institution | Directory Open Access Journal |
| issn | 1735-0913 2383-112X |
| language | fas |
| last_indexed | 2024-12-19T07:20:40Z |
| publishDate | 2013-06-01 |
| publisher | Regional Information Center for Science and Technology (RICeST) |
| record_format | Article |
| series | تحقیقات علوم چوب و کاغذ ایران |
| spelling | doaj.art-c00f2ce4c16d4c7d936a80db5379a7db2022-12-21T20:30:57ZfasRegional Information Center for Science and Technology (RICeST)تحقیقات علوم چوب و کاغذ ایران1735-09132383-112X2013-06-0128236638010.22092/ijwpr.2013.29522952Effect of alkaline pre-treatment on physical, optical and mechanical properties of semi-chemical NSSC wheat straw pulpSoodeh Zhand0Masieh Masoudifar1Ahmad Reza Saraeian2Ali Ghasemiyan3Wood &Paper Industrial Engineering, Department of Pulp and Paper Science and Technology, Gorgan University of Science and Natural Resourses, Gorgan, Iran.Wood &Paper Industrial Engineering , University of zabol, Iran.Wood & Paper Industrial Engineering, Department of Pulp and Paper Science and Technology, Gorgan University of Science and Natural Resources, Gorgan, IranWood & Paper Industrial Engineering, Department of Pulp and Paper Science and Technology, Gorgan University of Science and Natural Resources, Gorgan, Iran.In this study the effect of alkaline pretreatment with 1% NaOH on physical, optical and mechanical properties and refining of NSSC (Neutral Sulfite Semi Chemical) wheat straw pulp were investigated. The wheat straw (Zagros Sp.) was obtained from croplands Golestan province. Splinted wheat straw was pretreated with 1% NaOH(on the basis of OD weight) at 70 degrees for 30 minutes. The main pulping was performed at 160 ˚C with the fixed ratio of 5:1 Na2S03 and NaOH. After pulping defibration was done by lab-refiner to 380±25ml (CSF) and total yield and changes in Kappa was determined. Hand sheets of 60 gr. /m² were made on the basis of TAPPI standard and physical, optical and mechanical properties determined. The results show that alkaline pre-treatment has a significant effect in increasing of physical, optical and mechanical properties. Calculating primary freeness of pulps indicates that by increasing chemical compounds and NaOH, freeness decreases and that by increasing chemical compounds paper density increases, whereas yield, caliper and bulk decrease.http://ijwpr.areeo.ac.ir/article_2952_117eb88cdb53e379cc09264e9fcf69bc.pdfWHEAT STRAWNeutral Sulfite Semi Chemical pulpfreeness |
| spellingShingle | Soodeh Zhand Masieh Masoudifar Ahmad Reza Saraeian Ali Ghasemiyan Effect of alkaline pre-treatment on physical, optical and mechanical properties of semi-chemical NSSC wheat straw pulp تحقیقات علوم چوب و کاغذ ایران WHEAT STRAW Neutral Sulfite Semi Chemical pulp freeness |
| title | Effect of alkaline pre-treatment on physical, optical and mechanical properties
of semi-chemical NSSC wheat straw pulp |
| title_full | Effect of alkaline pre-treatment on physical, optical and mechanical properties
of semi-chemical NSSC wheat straw pulp |
| title_fullStr | Effect of alkaline pre-treatment on physical, optical and mechanical properties
of semi-chemical NSSC wheat straw pulp |
| title_full_unstemmed | Effect of alkaline pre-treatment on physical, optical and mechanical properties
of semi-chemical NSSC wheat straw pulp |
| title_short | Effect of alkaline pre-treatment on physical, optical and mechanical properties
of semi-chemical NSSC wheat straw pulp |
| title_sort | effect of alkaline pre treatment on physical optical and mechanical properties of semi chemical nssc wheat straw pulp |
| topic | WHEAT STRAW Neutral Sulfite Semi Chemical pulp freeness |
| url | http://ijwpr.areeo.ac.ir/article_2952_117eb88cdb53e379cc09264e9fcf69bc.pdf |
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