Journal of Bioresources and Bioproducts最新文献

{"title":"Influence of temperature and pressure during thermoforming of softwood pulp","authors":"Eva Pasquier ,&nbsp;Robert Skunde ,&nbsp;Jost Ruwoldt","doi":"10.1016/j.jobab.2023.10.001","DOIUrl":"https://doi.org/10.1016/j.jobab.2023.10.001","url":null,"abstract":"<div><p>In this study, the influence of thermoforming conditions on the resulting material properties was investigated, which aimed at developing advanced wood-fiber-based materials for the replacement of fossil plastics. Two bleached softwood pulps were studied, i.e., northern bleached softwood Kraft pulp (NBSK) and chemi-thermomechanical softwood pulp (CTMP). The thermoforming conditions were varied between 2–100 MPa and 150–200 °C, while pressing sheets of 500 g/m² for 10 min to represent thin-walled packaging more closely. As our results showed, the temperature had a more pronounced effect on the CTMP substrates than on the Kraft pulp. This was explained by the greater abundance of lignin and hemicelluloses, while fibrillar dimensions and the fines content may play a role in addition. Moreover, the CTMP exhibited an optimum in terms of tensile strength at intermediate thermoforming pressure. This effect was attributed to two counteracting effects: 1) Improved fiber adhesion due to enhanced densification, and 2) embrittlement caused by the loss of extensibility. High temperatures likely softened the lignin, enabling fiber collapse and a tighter packing. For the Kraft substrates, the tensile strength increased linearly with density. Both pulps showed reduced wetting at elevated thermoforming temperature and pressure, which was attributed to hornification and densification effects. Here, the effect of temperature was again more pronounced for CTMP than for the Kraft fibers. It was concluded that the thermoforming temperature and pressure strongly affected the properties of the final material. The chemical composition of the pulps will distinctly affect their response to thermoforming, which could be useful for tailoring cellulose-based replacements for packaging products.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 4","pages":"Pages 408-420"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67739366","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":"Efficient lignin biodegradation triggered by alkali-tolerant ligninolytic bacteria through improving lignin solubility in alkaline solution","authors":"Zhaoxian Xu ,&nbsp;Jie Li ,&nbsp;Pingping Li ,&nbsp;Chenggu Cai ,&nbsp;Sitong Chen ,&nbsp;Boning Ding ,&nbsp;Shuangmei Liu ,&nbsp;Mianshen Ge ,&nbsp;Mingjie Jin","doi":"10.1016/j.jobab.2023.09.004","DOIUrl":"https://doi.org/10.1016/j.jobab.2023.09.004","url":null,"abstract":"<div><p>Low lignin solubility in aqueous solution is one of the major bottlenecks for lignin biodegradation and bioconversion. Alkaline solution contributes to improving lignin solubility, whereas most microbes can not survive in alkaline conditions. Herein, lignin dissolution behaviors in different pH solutions were systematically investigated, which indicated that solution pH above 10.5 contributed to high solubility of alkali lignin. To match with alkaline lignin aqueous system, several alkali-tolerant ligninolytic bacteria were isolated, most of which are distinct to previously reported ones. Then, the ligninolytic capabilities of these isolates were assessed in different pH conditions by determining their assimilation on alkali lignin, lignin-derived monomers and dimers, their decolorization capabilities, and their lignin peroxidase activities. Thereafter, the underlying ligninolytic and alkali-tolerant mechanisms of <em>Sutcliffiella</em> sp. NC1, an alkalophilic bacterium, was analyzed on the basis of its genome information. The results not only provide valuable information for lignin biodegradation and lignin valorization, but also expand knowledge on alkali-tolerant bacteria.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 4","pages":"Pages 461-477"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67739364","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":"An overview of biomass solid fuels: Biomass sources, processing methods, and morphological and microstructural properties","authors":"Segun E. Ibitoye ,&nbsp;Rasheedat M. Mahamood ,&nbsp;Tien-Chien Jen ,&nbsp;Chanchal Loha ,&nbsp;Esther T. Akinlabi","doi":"10.1016/j.jobab.2023.09.005","DOIUrl":"https://doi.org/10.1016/j.jobab.2023.09.005","url":null,"abstract":"<div><p>Biomass solid fuel (BSF) has emerged as a promising renewable energy source, but its morphological and microstructural properties are crucial in determining their physical, mechanical, and chemical characteristics. This paper provides an overview of recent research on BSF. The focus is on biomass sources, BSF processing methods, and morphological and microstructural properties, with a special emphasis on energy-related studies. Specific inclusion and exclusion criteria were established for the study to ensure relevance. The inclusion criteria encompassed studies about BSFs and studies investigating the influence of biomass sources and processing methods on the morphological and microstructural properties of solid fuels within the past five years. Various technologies for converting biomass into usable energy were discussed, including gasification, torrefaction, carbonization, hydrothermal carbonization (HTC), and pyrolysis. Each has advantages and disadvantages in energy performance, techno-economics, and climate impact. Gasification is efficient but requires high investment. Pyrolysis produces bio-oil, char, and gases based on feedstock availability. Carbonization generates low-cost biochar for solid fuels and carbon sequestration applications. Torrefaction increases energy density for co-firing with coal. HTC processes wet biomass efficiently with lower energy input. Thermal treatment affects BSF durability and strength, often leading to less durability due to voids and gaps between particles. Hydrothermal carbonization alters surface morphology, creating cavities, pores, and distinctive shapes. Slow pyrolysis generates biochar with better morphological properties, while fast pyrolysis yields biochar with lower porosity and surface area. Wood constitutes 67% of the biomass sources utilized for bioenergy generation, followed by wood residues (5%), agro-residues (4%), municipal solid wastes (3%), energy crops (3%), livestock wastes (3%), and forest residues (1%). Each source has advantages and drawbacks, such as availability, cost, environmental impact, and suitability for specific regions and energy requirements. This review is valuable for energy professionals, researchers, and policymakers interested in biomass solid fuel.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 4","pages":"Pages 333-360"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67739360","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":"Characteristic properties of date-palm fibre/sheep wool reinforced polyester composites","authors":"Mohammed Y. Abdellah ,&nbsp;Mustafa Gamal Sadek ,&nbsp;Hamzah Alharthi ,&nbsp;G.T. Abdel-Jaber ,&nbsp;Ahmed H. Backar","doi":"10.1016/j.jobab.2023.09.003","DOIUrl":"https://doi.org/10.1016/j.jobab.2023.09.003","url":null,"abstract":"<div><p>In this study, we attempted to characterise the effects of date-palm fibre (DPF) and a date-palm fibre/sheep wool hybrid in polyester to enhance high-performance and low-cost composite materials that can be used in insulation building systems, automotive parts, and home furniture. The DPF was treated using 5 % NaOH solution; and the sheep wool was cleaned with 50 °C hot water and detergents. The composite specimens were prepared with different fibre contents (0 %, 10 %, 20 %, 30 % (<em>w</em>)) using a compression moulding technique. The effect of fibre reinforcement was analysed in terms of the mechanical properties (tensile, flexural, impact, and hardness) and composite density. Additionally, scanning electron microscopy (SEM) was performed on the fibres before and after treatment, and the fractured surfaces of all composite specimens were examined after tensile testing. The results showed that the 20 % DPF/sheep wool hybrid reinforced polyester produced the best results. The ultimate tensile strength and modulus were 27 MPa and 3.69 GPa, respectively. The ultimate flexural strength and flexural modulus were 35.4 and 2507 MPa, respectively. The impact strength was 39.5 kJ/m² and the hardness was 64 HB. The density decreased to the lowest value of 1.02 g/cm³ with the 30 % DPF/sheep wool hybrid. The SEM showed good adhesion and interfacial bonding between DPF/sheep wool hybrid fibres and the polyester matrix, particularly at 20 % fibre content.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 4","pages":"Pages 430-443"},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67739367","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":"Mycelium as a self-growing biobased material for the fabrication of single-layer masks","authors":"Victoria French,&nbsp;Chuanshen Du,&nbsp;E. Johan Foster","doi":"10.1016/j.jobab.2023.07.001","DOIUrl":"10.1016/j.jobab.2023.07.001","url":null,"abstract":"<div><p>Disposable face masks are an essential piece of personal protective equipment for workers in medical facilities, laboratories, and the general public to prevent the spread of illnesses and/or contamination. Covid-19 resulted in an uptick in the usage and production of face masks, exacerbating issues related to the waste and recycling of these materials. Traditionally, face masks are derived from petrochemicals, such as melt-blown or spunbound polypropylene. As such, there is a need to find sustainable mask materials that can maintain or improve the performance of petrochemical masks. This paper explores an alternative mask material that utilizes fungal mycelium as self-growing filaments to enhance the efficiency of individual polypropylene mask layers. By engineering the growth pattern and time, breathability and filtration efficiency was optimized such that one layer of the mycelium-modified mask could replace all three layers of the traditional three-layer mask. Additionally, it was found that the mycelium-modified mask exhibits asymmetric hydrophobicity, with super-hydrophobicity at the composite-air interface and lower hydrophobicity at the composite-medium interface. This property can improve the performance of the modified mask by protecting the mask from external liquids without trapping water vapor from the user's breath. The findings from this study can provide a basis for further development of mycelium to create sustainable filtration materials with enhanced functionality.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 4","pages":"Pages 399-407"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43471544","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 residual fatty acids in matter organic non-glycerol from a soy biodiesel plant in filaments used for 3D printing","authors":"Sreesha Malayil ,&nbsp;Athira Nair Surendran ,&nbsp;Kunal Kate ,&nbsp;Jagannadh Satyavolu","doi":"10.1016/j.jobab.2023.04.001","DOIUrl":"10.1016/j.jobab.2023.04.001","url":null,"abstract":"<div><p>Matter organic non-glycerol (MONG) is a considerable waste output (20%−25% of crude glycerol) typically landfilled by soy biodiesel plants. In this work, soy MONG was characterized for potential use as a copolymer to produce filaments for 3D printing with an intent to add value and redirect it from landfills. As a copolymer, MONG was evaluated to reduce the synthetic polymer content of the natural fiber composites (NFC). Even though the general thermal behavior of the MONG was compared to that of a thermoplastic polymer in composite applications, it is dependent on the composition of the MONG, which is a variable depending on plant discharge waste. In order to improve the thermal stability of MONG, we evaluated two pretreatments (acid and acid + peroxide). The acid + peroxide pretreatment resulted in a stabilized paste with decreased soap content, increased crystallinity, low molecular weight small chain fatty acids, and a stable blend as a copolymer with a thermoplastic polymer. This treatment increased formic acid (17.53%) in MONG, along with hydrogen peroxide, led to epoxidation exhibited by the increased concentration of oxirane (5.6%) evaluating treated MONG as a copolymer in polymer processing and 3D printing.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 3","pages":"Pages 215-223"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44150946","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":"Preparation and characterization of tea tree oil-β-cyclodextrin microcapsules with super-high encapsulation efficiency","authors":"Peifu Kong ,&nbsp;Junichi Peter Abe ,&nbsp;Shunsuke Masuo ,&nbsp;Toshiharu Enomae","doi":"10.1016/j.jobab.2023.03.004","DOIUrl":"10.1016/j.jobab.2023.03.004","url":null,"abstract":"<div><p>This study aimed to prepare tea tree oil-<em>β</em>-cyclodextrin microcapsules using an optimized co-precipitated method. The impact of the volume fraction of ethanol in the solvent system for microencapsulation on encapsulation efficiency was investigated and analyzed sophisticatedly. Super-high encapsulation efficiency was achieved when a 40% volume fraction of ethanol was used for the microencapsulation procedure, where the recovery yield of microcapsules and the embedding fraction of tea tree oil in microcapsules were as high as 88.3% and 94.3%, respectively. Additionally, considering the operation cost, including time and energy consumption, an economical preparation was validated so that it would be viable for large-scale production. Based on the results of morphological and X-ray diffraction analysis, the crystal structure appeared to differ before and after microencapsulation. The results of gas chromatography-mass spectrometry and Fourier transform infrared spectroscopy confirmed the successful formation of microcapsules. Furthermore, the antibacterial activity of the fabricated microcapsules was assessed by a simple growth inhibition test using <em>Bacillus subtilis</em> as the study object, and the hydrophilic property was proved by a water contact angle measurement.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 3","pages":"Pages 224-234"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45295316","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":"Multiscale wood micromechanics and size effects study via nanoindentation","authors":"Yuri I. Golovin ,&nbsp;Alexander A. Gusev ,&nbsp;Dmitry Yu. Golovin ,&nbsp;Sergey M. Matveev ,&nbsp;Alexander I. Tyrin ,&nbsp;Alexander A. Samodurov ,&nbsp;Viktor V. Korenkov ,&nbsp;Inna A. Vasyukova ,&nbsp;Maria A. Yunaсk","doi":"10.1016/j.jobab.2023.04.002","DOIUrl":"10.1016/j.jobab.2023.04.002","url":null,"abstract":"&lt;div&gt;&lt;p&gt;Wood as a material is a natural composite with a complex hierarchically arranged structure. All scale levels of wood structure contribute to its macroscopic mechanical properties. The nature of such characteristics and deformation modes differs radically at different scale levels. Wood macroscopic properties are well studied, and the relevant information can be easily found in the literature. However, the knowledge of the deformation mechanisms at the mesoscopic level corresponding to the cellular structure of early and late wood layers of annual growth rings is insufficient. It hinders building the comprehensive multiscale model of how wood mechanical properties are formed. This paper described the results of scanning of mechanical properties of softwood and hardwood samples, such as common pine, small-leaf lime, and pedunculate oak, by means of nanoindentation (NI). The NI technique allows varying the size of deformed region within a wide range by altering maximal load (&lt;em&gt;P&lt;/em&gt;&lt;sub&gt;max&lt;/sub&gt;) applied to the indenter so that one can repeatedly and non-destructively test wood structural components at different scale levels on the same sample without changing the technique or equipment. It was discovered that the effective microhardness (&lt;em&gt;H&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt;) and Young's modulus (&lt;em&gt;E&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt;) decreased manifold with &lt;em&gt;P&lt;/em&gt;&lt;sub&gt;max&lt;/sub&gt; growing from 0.2 to 2 000 mN. This drop in &lt;em&gt;H&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt; was observed when the locally deformed region grew, and resulting from &lt;em&gt;P&lt;/em&gt;&lt;sub&gt;max&lt;/sub&gt; increase generally follows the rule similar to the Hall-Petch relation for yield stress, strength, and hardness initially established for metals and alloys, though obviously in those cases the underlying internal mechanisms are quite different. The nature and micromechanisms of such size effect (SE) in wood revealed using NI were discussed in this study. At &lt;em&gt;P&lt;/em&gt;&lt;sub&gt;max&lt;/sub&gt; &lt; 0.2 mN, the deformed area under the pyramidal Berckovich indenter was much smaller than the cell wall width. Hence, in this case, NI measured the internal mechanical properties of the cell wall material as long as free boundaries impact could be neglected. At &lt;em&gt;P&lt;/em&gt;&lt;sub&gt;max&lt;/sub&gt; &gt; 200 mN, the indentation encompassed several cells. The measured mechanical properties were significantly affected by bending deformation and buckling collapse of cell walls, reducing &lt;em&gt;H&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt; and &lt;em&gt;E&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt; substantially. At &lt;em&gt;P&lt;/em&gt;&lt;sub&gt;max&lt;/sub&gt; ≈ 1–100 mN, an indenter interacted with different elements of the cell structure and capillary network, resulting in intermediate values of &lt;em&gt;H&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt; and &lt;em&gt;E&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt;. Abrupt changes in &lt;em&gt;H&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt; and &lt;em&gt;E&lt;/em&gt;&lt;sub&gt;eff&lt;/sub&gt; at annual growth ring boundaries allow accurate measuring of rings width, while smoother and less pronounced changes within the rings allow identification of earlywood and latewood layers as well as any finer changes du","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 3","pages":"Pages 246-264"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46194837","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":"Design of B/N Co-doped micro/meso porous carbon electrodes from CNF/BNNS/ZIF-8 nanocomposites for advanced supercapacitors","authors":"Zhen Shang ,&nbsp;Xingye An ,&nbsp;Shuangxi Nie ,&nbsp;Na Li ,&nbsp;Haibing Cao ,&nbsp;Zhengbai Cheng ,&nbsp;Hongbin Liu ,&nbsp;Yonghao Ni ,&nbsp;Liqin Liu","doi":"10.1016/j.jobab.2023.05.002","DOIUrl":"10.1016/j.jobab.2023.05.002","url":null,"abstract":"<div><p>Boron (B) and nitrogen (N) co-doped 3D hierarchical micro/<em>meso</em> porous carbon (BNPC) were successfully fabricated from cellulose nanofiber (CNF)/ boron nitride nanosheets (BNNS)/ zinc-methylimidazolate framework-8 (ZIF-8) nanocomposites prepared by 2D BNNS, ZIF-8 nanoparticles, and wheat straw based CNFs. Herein, CNF/ZIF-8 acts as versatile skeleton and imparts partial N dopant into porous carbon structure, while the introduced BNNS can help strengthen the hierarchical porous superstructure and endow abundant B/N co-dopants within BNPC matrix. The obtained BNPC electrode possesses a high specific surface area of 505.4 m²/g, high B/N co-doping content, and desirable hydrophilicity. Supercapacitors assembled with BNPC-2 (B/N co-doped porous carbon with a CNF/BNNS mass ratio of 1꞉2) electrodes exhibited exceptional electrochemical performance, demonstrating high capacitance stability even after 5 000 charge-discharge cycles. The devices exhibited outstanding energy density and power density, as well as the highest specific capacitance of 433.4 F/g at 1.0 A/g, when compared with other similar reports. This study proposes a facile and sustainable strategy for efficiently fabrication of rich B/N co-doped hierarchical micro/<em>meso</em> porous carbon electrodes from agricultural waste biomass for advanced supercapacitor performance.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 3","pages":"Pages 292-305"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46262911","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":"Soda pulping of sunn hemp (Crotalaria juncea L.) and its usage in molded pulp packaging","authors":"Piyawan Yimlamai,&nbsp;Theerat Ardsamang,&nbsp;Pratuang Puthson,&nbsp;Phichit Somboon,&nbsp;Buapan Puangsin","doi":"10.1016/j.jobab.2023.04.003","DOIUrl":"10.1016/j.jobab.2023.04.003","url":null,"abstract":"<div><p>Petroleum-based materials are often used in the packaging industry. However, the single use value of such products can be problematic with regard to proper waste disposal. As such, molded pulp packaging can be used as an alternative, given its ease of recycling, composting, and eventual biodegradation. In this work, we aims to study the pulp properties of sunn hemp and its usage as molded pulp products. For this purpose, unbleached beaten and unbeaten soda pulps derived from the whole stem of sunn hemp were examined for their fiber morphology, fibrillation, fiber classification, and physical properties. The sunn hemp pulp was subsequently molded using a batch molding machine. To determine the hydrophobicity of the molded pulp products, the molded samples were manufactured with and without additives. Finally, some properties of the molded pulp products were examined and compared with the commercially available bleached bagasse molded pulp products. It was observed that the molded products made from sunn hemp pulp with additives had a higher water contact angle than that of the commercial products. In terms of general usage, the molded products from sunn hemp pulp with additives were found to be capable of storing hot water, hot cooking oil, as well as microwaving water. We concluded that the sunn hemp pulp could be used as an alternative fibrous raw material in the production of molded pulp packaging.</p></div>","PeriodicalId":52344,"journal":{"name":"Journal of Bioresources and Bioproducts","volume":"8 3","pages":"Pages 280-291"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45798922","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}