Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw
The wheat straw as abundant lignocellulosic resource was successfully undergone in a benzylation reaction and plasticized with different contents (2.5, 3, 5 and 7 wt. %) of glycerol and stearic acid.The effect of type and concentration of plasticizers on the mechanical, thermomechanical, morphologic...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2014-12-01
|
| Series: | Iranian Journal of Chemistry & Chemical Engineering |
| Subjects: | |
| Online Access: | http://www.ijcce.ac.ir/article_11811_bb6b27a1abcf3958dce71de33c1e4334.pdf |
| _version_ | 1828552927261753344 |
|---|---|
| author | Jamshid Mohammadi Rovshandeh Kamel Ekhlasi Kazaj Ashkan Hosseini Peyman Pouresmaeel Selakjani |
| author_facet | Jamshid Mohammadi Rovshandeh Kamel Ekhlasi Kazaj Ashkan Hosseini Peyman Pouresmaeel Selakjani |
| author_sort | Jamshid Mohammadi Rovshandeh |
| collection | DOAJ |
| description | The wheat straw as abundant lignocellulosic resource was successfully undergone in a benzylation reaction and plasticized with different contents (2.5, 3, 5 and 7 wt. %) of glycerol and stearic acid.The effect of type and concentration of plasticizers on the mechanical, thermomechanical, morphological and water absorption properties of Benzylated Wheat Straw (BWS) was investigated by tensile, Dynamic Mechanical Thermal Analysis (DMTA) measurements and Scanning Electron Microscopy (SEM), respectively. The experimental results show that addition of plasticizer may increase the elongation at break and may decrease the tensile strength for the sheet plasticized with 5% or 7% stearic acid and 3% or 5% glycerol. The addition of 7% glycerol or 3% stearic acid makes increase both tensile strength and elongation at break. These films are stronger but less tough compared to unplasticized BWS film. The porosity at the surfaces of samples from the SEM micrographs showed good correlation with the mechanical properties of the blends.On addition of plasticizer, it is observed that there is a decrease in the size of micropores and for higher concentration, it no longer exists. Compared with glycerol, the water absorption of the BWS films plasticized with stearic acid was significantly lower. Glycerol is soluble in water and removed from films after floating in water. The film plasticized with 2.5% both glycerol and stearic acid had better water resistance than others. As usual, glass transition temperatures of samples were decreased by addition of plasticizers according to DMTA results. |
| first_indexed | 2024-12-12T05:09:59Z |
| format | Article |
| id | doaj.art-9125a9da0295404db595b537ab0fe8b7 |
| institution | Directory Open Access Journal |
| issn | 1021-9986 1021-9986 |
| language | English |
| last_indexed | 2024-12-12T05:09:59Z |
| publishDate | 2014-12-01 |
| publisher | Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
| record_format | Article |
| series | Iranian Journal of Chemistry & Chemical Engineering |
| spelling | doaj.art-9125a9da0295404db595b537ab0fe8b72022-12-22T00:36:58ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering1021-99861021-99862014-12-0133410711611811Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat StrawJamshid Mohammadi Rovshandeh0Kamel Ekhlasi Kazaj1Ashkan Hosseini2Peyman Pouresmaeel Selakjani3Caspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshahr, P.O. Box 43841-119 Guilan, I.R. IRANCaspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshahr, P.O. Box 43841-119 Guilan, I.R. IRANCaspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshahr, P.O. Box 43841-119 Guilan, I.R. IRANCaspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshahr, P.O. Box 43841-119 Guilan, I.R. IRANThe wheat straw as abundant lignocellulosic resource was successfully undergone in a benzylation reaction and plasticized with different contents (2.5, 3, 5 and 7 wt. %) of glycerol and stearic acid.The effect of type and concentration of plasticizers on the mechanical, thermomechanical, morphological and water absorption properties of Benzylated Wheat Straw (BWS) was investigated by tensile, Dynamic Mechanical Thermal Analysis (DMTA) measurements and Scanning Electron Microscopy (SEM), respectively. The experimental results show that addition of plasticizer may increase the elongation at break and may decrease the tensile strength for the sheet plasticized with 5% or 7% stearic acid and 3% or 5% glycerol. The addition of 7% glycerol or 3% stearic acid makes increase both tensile strength and elongation at break. These films are stronger but less tough compared to unplasticized BWS film. The porosity at the surfaces of samples from the SEM micrographs showed good correlation with the mechanical properties of the blends.On addition of plasticizer, it is observed that there is a decrease in the size of micropores and for higher concentration, it no longer exists. Compared with glycerol, the water absorption of the BWS films plasticized with stearic acid was significantly lower. Glycerol is soluble in water and removed from films after floating in water. The film plasticized with 2.5% both glycerol and stearic acid had better water resistance than others. As usual, glass transition temperatures of samples were decreased by addition of plasticizers according to DMTA results.http://www.ijcce.ac.ir/article_11811_bb6b27a1abcf3958dce71de33c1e4334.pdflignocellulosic resourcebenzylationwheat strawstearic acidglycerol |
| spellingShingle | Jamshid Mohammadi Rovshandeh Kamel Ekhlasi Kazaj Ashkan Hosseini Peyman Pouresmaeel Selakjani Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw Iranian Journal of Chemistry & Chemical Engineering lignocellulosic resource benzylation wheat straw stearic acid glycerol |
| title | Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw |
| title_full | Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw |
| title_fullStr | Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw |
| title_full_unstemmed | Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw |
| title_short | Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw |
| title_sort | effect of glycerol and stearic acid as plasticizer on physical properties of benzylated wheat straw |
| topic | lignocellulosic resource benzylation wheat straw stearic acid glycerol |
| url | http://www.ijcce.ac.ir/article_11811_bb6b27a1abcf3958dce71de33c1e4334.pdf |
| work_keys_str_mv | AT jamshidmohammadirovshandeh effectofglycerolandstearicacidasplasticizeronphysicalpropertiesofbenzylatedwheatstraw AT kamelekhlasikazaj effectofglycerolandstearicacidasplasticizeronphysicalpropertiesofbenzylatedwheatstraw AT ashkanhosseini effectofglycerolandstearicacidasplasticizeronphysicalpropertiesofbenzylatedwheatstraw AT peymanpouresmaeelselakjani effectofglycerolandstearicacidasplasticizeronphysicalpropertiesofbenzylatedwheatstraw |