Journal of biomaterials最新文献

{"title":"Optimizing Kraft Pulping Conditions to Improve Nettle Plant Pulp Quality","authors":"Tsiye Tekleyohanis, B. Woldeyes","doi":"10.11648/j.jb.20240801.11","DOIUrl":"https://doi.org/10.11648/j.jb.20240801.11","url":null,"abstract":"The suitability of nettle plants for the production of pulp and paper was thoroughly examined, with special consideration given to the plant’s chemical compositions, morphological analysis, and kraft pulping qualities. The mean values of cell wall thickness, fiber length, lumen width, runkel ratio, and nettle plant diameter were found to be 7.4 μm, 55 mm, 4.9 μm, 2.4 and 16.9 μm, respectively. Although nettle plant fibers have a stronger cell wall, their physical properties are comparable to another biomass. The chemical composition investigation found that the contents of nettle plants were 64.8 weight percent holocellulose, 38.7 weight percent alpha-cellulose, 16.8 weight percent lignin, and 5.8 weight percent ash. Additionally, 8.4 weight percent were discovered in the 1% alkaline extractives of nettle leaves. The kraft pulping process of nettle plants needed a low chemical charge and lower boiling time when compared to a number of other non-wood raw materials utilized in the papermaking process. Despite these circumstances, kraft-pulped nettle plants yielded a high-yield bleachable grade pulp. Kraft pulp produced from bleached nettle plants had strength properties that were comparable to those of other biomass for pulp and papermaking materials. Overall, this present research show that nettle plants, which have morphological and chemical characteristics comparable to those of traditional papermaking materials, have a bright future as a source of pulp and paper.\u0000","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"9 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140247790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the Effect of Silicon Concentration on Biocompatibility and Bioactivity of Spray Pyrolyzed Bioactive Glass","authors":"Tsion Chuni Aklilu, Bethelhem Gashaw Ewnete, Megersa Aboneh Mekuria, Aster Aberra Tessema, Filimon Hadish, Fetene Fufa Bakare","doi":"10.11648/j.jb.20230701.11","DOIUrl":"https://doi.org/10.11648/j.jb.20230701.11","url":null,"abstract":"","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"27 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Characterization of Copper Ions Doped Octacalcium Phosphate Powders with Enhanced Osteogenic Property","authors":"Jiwen Chen, C. Chen, Yun-Ching Wu, Riwang Li, You-Jie Liu, Yiwan Shi, Huige Hou, Junting Liu, Hua-Jun Wang, Tingting Wu, Xiaofei Zheng","doi":"10.11648/J.JB.20210501.12","DOIUrl":"https://doi.org/10.11648/J.JB.20210501.12","url":null,"abstract":"Diverse biomaterials have been designed to promote bone regeneration, and due to their potential side effects of adverse inflammation and immune responses, only a few synthetic biomaterials displayed successful clinical outcomes in repairing bone defects. The repair of bone defects remains a big challenge for orthopedists. This study was dedicated to the synthesis of copper-doped octacalcium phosphate powder Cu-OCP with good bone repair potential, which provides a new way for the construction of bone regeneration biomaterials. Five kinds of copper-doped powders, OCP, 0.1Cu-OCP, 0.5Cu-OCP, Cu-OCP and 5Cu-OCP, were synthesized by chemical homogeneous precipitation method. The phases of the powders were analyzed by X-ray diffraction (XRD). The elemental compositions of the powders were analyzed by X-ray fluorescence spectrometer (XRF). The microstructures of the powders were observed by scanning electron microscopy (SEM). Inductively coupled plasma atomic emission spectrometry (ICP) was used to determine the 24-hour cumulative release of copper ions in Tris solution. The biocompatibility of the powders was measured by CCK8 and live/dead staining. The effect of the powders on bone differentiation was measured by ALP activity. the OCP powder was a long strip chip like crystal structure under SEM. The doping of Cu2+ made the chip structure smaller and finer. The main diffraction peak of OCP can be seen at 2θ=4.7° for all the five powders. XRF showed that the main composition of the powders was still Ca, P and O. The mass fractions of Cu2+ in the powders were 0.1Cu-OCP: 0.02%, 0.5Cu-OCP: 0.08%, Cu-OCP: 0.23%, and 5Cu-OCP: 0.76%, respectively. ICP results showed that Ca, P and Cu were released slowly in 24 hours in Tris solution. CCK8 and live/dead staining showed that all kinds of copper-doped OCP powders had good biocompatibility with mBMSCs, and could promote osteogenic differentiation. Among them, 0.5Cu-OCP promoted the proliferation and ALP activity of mBMSCs significantly. In conclusion, in this study, copper ions were successfully doped into OCP powder, and the physical and chemical properties of OCP powders doped with copper ions were characterized. In vitro cell experiment confirmed that the powders had good biocompatibility, non-toxic to mBMSCs, and could promote the proliferation of mBMSCs in vitro.","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76839314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light Weight Clay Bricks in Combination of Sludge Blended with Agro/Wastes","authors":"Hassan Hassanien Mohamed Darweesh","doi":"10.11648/j.jb.20210502.11","DOIUrl":"https://doi.org/10.11648/j.jb.20210502.11","url":null,"abstract":"","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72947438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utilization of Physalis Pith Ash as a Pozzolanic Material in Portland Cement Pastes","authors":"Hassan Hassanien Mohamed Darweesh","doi":"10.11648/j.jb.20210501.11","DOIUrl":"https://doi.org/10.11648/j.jb.20210501.11","url":null,"abstract":"","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81441545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of Selected Nigerian Kaolinites and Agricultural Waste Ashes as Materials for Sustainable Geopolymer Brick Manufacturing","authors":"Ogbonna Chidiebere Chinonso","doi":"10.11648/j.jb.20210502.12","DOIUrl":"https://doi.org/10.11648/j.jb.20210502.12","url":null,"abstract":"","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74636600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospun Chitosan-based Fibers for Wound Healing Applications.","authors":"Sameer Sapkota,&nbsp;Shih-Feng Chou","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Chitosan, a natural-occurring biopolymer, is biocompatible to tissues with excellent antibacterial and hemostatic properties, which makes it a great candidate among wound dressing materials. In this paper, electrospun fiber-based wound dressings from blend chitosan and/or polyethylene oxide (PEO) and/or polyvinyl alcohol (PVA) fibers were reviewed. The incorporation of these water-soluble copolymers allows the entanglement of the rigid chitosan molecular chains during electrospinning leading to the production of continuous nonwoven fibers having average diameters ranging from several tenths to hundredths of nanometers. Increasing chitosan composition in the fibers improves the bulk mechanical strength of the fiber mats due to the rigid molecular structure of chitosan. The nano-sized pores within the fiber mats promote permeability of the fiber dressings, which further enhances the exchange of oxygen and nutrients with outside environment. In addition, the porous fiber mat structure facilitates the absorption of wound exudates while reducing the possibility of bacterial infections. Several studies in antibacterial and anti-inflammatory responses of chitosan-based electrospun fibers were discussed in this short review. More importantly, inclusions of small molecule drugs and/or biological agents are possible in chitosan-based electrospun fibers, which provide a multi-purpose treatment capability for wound healing applications.</p>","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"4 2","pages":"51-57"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8159176/pdf/nihms-1678585.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9333760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospun Chitosan-based Fibers for Wound Healing Applications.","authors":"Sameer Sapkota, S. Chou","doi":"10.11648/J.JB.20200402.13","DOIUrl":"https://doi.org/10.11648/J.JB.20200402.13","url":null,"abstract":"Chitosan, a natural-occurring biopolymer, is biocompatible to tissues with excellent antibacterial and hemostatic properties, which makes it a great candidate among wound dressing materials. In this paper, electrospun fiber-based wound dressings from blend chitosan and/or polyethylene oxide (PEO) and/or polyvinyl alcohol (PVA) fibers were reviewed. The incorporation of these water-soluble copolymers allows the entanglement of the rigid chitosan molecular chains during electrospinning leading to the production of continuous nonwoven fibers having average diameters ranging from several tenths to hundredths of nanometers. Increasing chitosan composition in the fibers improves the bulk mechanical strength of the fiber mats due to the rigid molecular structure of chitosan. The nano-sized pores within the fiber mats promote permeability of the fiber dressings, which further enhances the exchange of oxygen and nutrients with outside environment. In addition, the porous fiber mat structure facilitates the absorption of wound exudates while reducing the possibility of bacterial infections. Several studies in antibacterial and anti-inflammatory responses of chitosan-based electrospun fibers were discussed in this short review. More importantly, inclusions of small molecule drugs and/or biological agents are possible in chitosan-based electrospun fibers, which provide a multi-purpose treatment capability for wound healing applications.","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"30 1","pages":"51-57"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74184597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Study of Physico-Mechanical Properties Between Okra and E-glass Fiber-Reinforced Polypropylene-based Composites","authors":"Kamrun N. Keya, Nasrin A. Kona, R. Khan","doi":"10.11648/J.JB.20190302.12","DOIUrl":"https://doi.org/10.11648/J.JB.20190302.12","url":null,"abstract":"Okra fiber (OF) reinforced polypropylene (PP) matrix composites (45 wt% fiber) were fabricated using a compression molding technique. To fabricate the composite treated Okra fiber were used. Tensile strength (TS), tensile modulus (TM), elongation at break (Eb%), bending strength (BS), bending modulus (BM), impact strength (IS) and hardness of the composites were found to be 38.5 MPa, 0.68 GPa, 8.2%, 72.5 MPa, 5.56 GPa, 22.87 kJ/m2, and 97 (Shore-A), respectively. Then E-glass fiber (woven)-reinforced polypropylene-based composites (45 wt% fiber) were fabricated and the mechanical properties (TS, TM, Eb%, BS, BM, IS, hardness) were found 80 MPa, 5 GPa, 11%, 81 MPa, 10 GPa, 32 kJ/m2, and 97 (Shore-A), respectively. After that compared E-glass fiber/PP based composites mechanical properties with those of the OF/PP based composites mechanical properties. It was observed that E-glass fiber-based composites showed almost double mechanical properties compared to OF/PP based composite. Water absorption and elongation percentage at break showed different scenario and it was noticed from the experimental study that water absorption and elongation at break (%) of was higher than E-glass based composites. After the flexural test, fracture surfaces of the E-glass/PP and OF/PP composites were investigated using scanning electron microscope (SEM) and the results revealed that E-glass fiber reinforced based composites matrix adhesion less than the E-glass fiber reinforced based composites.","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81515404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Features of High Current Nanosecond Discharge in Mixture of High Pressure CuInSe2 Chalkopyrite Vapor and Argon","authors":"Shuiabov Oleksander, Mynya Oleksander, Chyhin Vasyl, Grytsak Roksolana, Malinina Antonina","doi":"10.11648/J.JB.20190302.11","DOIUrl":"https://doi.org/10.11648/J.JB.20190302.11","url":null,"abstract":"The features of an over-voltage high-current nanosecond discharge in argon of high pressure (р=202 kPa) ignited between the electrodes of CuInSe2 compound are presented. In the sputtering of massive chalcopyrite electrodes, the CuInSe2 pair gets into the discharge plasma. Main products of dissociation of chalcopyrite molecules in the over-voltage nanosecond discharge are established. They were in excited and ionized states and in the spectra of plasma radiation they were predominantly represented by atoms and single charged ions of copper and indium. It is proposed to use the spectral lines of copper and indium to control the process of thin films of chalcopyrite deposition in a real time. Using gas-discharge method thin films of chalcopyrite are synthesized on quartz substrates. These films effectively absorb the radiation falling on their surface in the spectral range of 200-800 nm. This property opens the prospects for their application in photovoltaic devices.","PeriodicalId":73619,"journal":{"name":"Journal of biomaterials","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81493480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}