Recently, the demand for biodegradable, eco-friendly and sustainable alternatives has been on increase. Although numerous biopolymers such as cellulose, starch, plants proteins polylactic acid, etc., have used to produce bioplastics, outcomes need more improvement suit different applications. This paper comprehensively maps expanding academic territory using lignin a reinforcement material improve biopolymers-based materials' properties. A brief discussion chronological development of...

The sustainability, performance, and cost of production in the plywood industry depend on wood adhesives hot-pressing process. In this study, a cold-setting adhesive was developed based polyvinyl alcohol (PVOH), high-purity lignin, hexamine. influence lignin content (10%, 15%, 20%) cold-pressing time (3, 6, 12, 24 h) cohesion, adhesion, formaldehyde emission were investigated through physical, chemical, thermal, mechanical analyses. increased addition level lowered solids content, which...

Growth, development, and structural changes within the Universitas Sumatera Utara Arboretum since its establishment in 2005 should be recognized, observed, investigated. Previously, site of this arboretum was oil palm plantation. The objective study is to map, classify, identify, calculate potency vegetation arboretum. Method research combination literature field work. In research, study, visit, inventory work were reported. Results revealed that at least 56 species forestry plants found...

Abstract This work interconnected between human, culture, and technology in term of preserving songket, a traditional handwoven fabric, constructed by levering the yarn to be woven with other using non-machine weaving apparatus. To bring back glory natural fibers, this study aims utilize oil palm trunk fibers as raw material for making songket. Methods experiment were included preparation material, collection mechanical procedure, creation twisting including addition adhesive, evaluation...

Abstract Purun is commonly used in crafts like mats, hats, and tissue boxes, but synthetic dyes these products have negative environmental impacts. This research aims to study the use of natural purun fibre Natural were extracted using distilled water 96% ethanol from purple sweet potato, turmeric, mango leaves. was treated with 2% mixed 5% vinegar acid, then dried observe color changes assess effect on fiber dimensions. Extraction yields ranged 10% 16%, no significant differences between or...

Using oil palm trunk (OPT) layered with empty fruit bunch (EFB), so-called hybrid plywood enhanced ash nanoparticles, phenol-formaldehyde (PF) resin as a binder, was produced in this study. The resins filled different loading of (OPA) nanoparticles were prepared and used glue for layers the veneer fibre mat. resulting characterised. physical, mechanical, thermal, morphological properties panels investigated. results obtained showed that presence OPA significantly affected thermal panels....

Antimicrobial irradiated seaweed–neem biocomposite films were synthesized in this study. The storage functional properties of the investigated. Characterization prepared was conducted using SEM, FT-IR, contact angle, and antimicrobial test. macroscopic microscopic including analysis group gas chromatography-mass spectrometry test revealed main active constituents present neem extract, which used an essential component fabricated films. Neem leaves’ extracts with 5% w/w concentration...

Medan City is the third-largest city in Indonesia and serves as capital of North Sumatra Province. The has several sub-districts with mangrove forests, largest area located Belawan Sub-district, followed by Labuhan Marelan Sub-districts. forests are situated downstream part Deli Watershed or northern City. Over past fourteen years, there been a significant change land cover, particularly Sub-district. To address this issue, an integrated remote sensing, Geographic Information Systems (GIS),...

Mangrove forests in North Sumatera, Indonesia existed the east coast of Sumatera Island and commonly thrived Langkat, Deli Serdang, Batubara, Tanjung Balai, Asahan, Labuhanbatu until Serdang Bedagai. The present study describes developing community-based mangrove management (CBMM) through eco-tourism two locations, Lubuk Kertang (LK) Langkat Sei Nagalawan (SN) Bedagai, Sumatra, Indonesia. ecosystem, coastal villagers visitors, related stakeholder were analyzed to potential ecological...

Background: Secondary metabolites from the group of isoprenoid compounds are widely distributed in mangrove plants. Polyisoprenoids (dolichol and polyprenol) known to have benefits as anticancer agents. The present study was conducted determine cytotoxic potential polyisoprenoids leaves seventeen selected species against colon cancer (WiDr) cells. Methods: Cytotoxic activity evaluated by MTT assay vitro using WiDr human cells 3T3 fibroblasts Swiss albino mouse embryo tissue controls....

Biodegradable bioplastics provide a promising solution to mitigate environmental harm from petroleum-based plastics. This study focuses on optimizing bioplastic films made oil palm trunk starch (OPTS), using glycerol (10, 20, and 30 % v/w) as plasticizer modified with citric-acid epoxidized (CEPO). The were formed the casting method analyzed for morphology, functional groups, diffraction peaks, thermal mechanical properties, degradation time, compostability. optimal conditions achieved...

To address concerns over plastics in the global environment, this project produced three wood composites (WPCs) which could divert from waste stream into new materials. The materials made had a ratio of 85%:15%, 90%:10%, and 95%:5% low density polyethylene (LDPE) to powder were using dissolution method. Physical mechanical properties each WPC evaluated according Japanese Industrial Standard (JIS) A 5908:2003. Their degradation nature was through graveyard test assay conducted Coptotermes...

The development and utilization of wood briquettes is one the efforts to reduce dependence on fossil fuels, including fulfill overseas market need. This study aimed evaluate properties made branches three mangrove species analyze effect different branches, types starch adhesive, quality briquettes. in this were 3 cm × 4 a cylindrical shape using namely mata buaya (Bruguiera sexangula), buta-buta (Excoecaria agallocha), bakau minyak (Rhizophora apiculata), while adhesives used tapioca starch,...

Urea-formaldehyde (UF) resin, one of the most important formaldehyde resin adhesives, is a polymeric condensation product with urea, and being widely used for manufacture wood-based composite panels, such as plywood, particleboard, fiberboard. In spite its benefits fast curing, good performance in panels (colorless), lower cost; emission (FE) originated from either UF itself or products bonded by resins considered critical drawback it affects human health particularly indoor environment....

In this study, the removal of urea-formaldehyde (UF) resin adhesives from waste wood particleboards (PBs) via hydrolysis was discussed, particularly use application to combat environmental issues often encountered in recycling projects. Herein, conditions required for producing PBs with poor binding properties were examined. Additionally, we determined appropriate formaldehyde: urea (F/U) mole ratios, namely, 0.95, 1.05, and 1.15, generating UF resins that can be characterized used as PB...

Abstract Cellulose Nanofibrils (CNF) was successfully obtained by TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidation with the addition of different oxidant namely NaClO (Sodium Hypochlorite) i.e. 3, 4, 7, 10 and 15 mL followed ultra-sonication treatment. Size distribution nanocellulose observed using particle size analyzer, while surface charged measured zeta potentiometer. At level oxidant, CNF distribution. As amount increased, increased which correlated to higher...

In this work, to better understand the bonding process of plastic plywood panels, effects recycled low-density polyethylene (rLDPE) film three thicknesses (50, 100, and 150 µm) veneers four various wood species (beech, birch, hornbeam, poplar) on properties panels were studied. The obtained also compared with bonded by virgin (LDPE) film. results showed that samples rLDPE LDPE films differ insignificantly. Samples demonstrated satisfactory physical mechanical properties. It was established...

The current research trend for excellent miscibility in polymer mixing is the use of plasticizers. most plasticizers usually has some negative effects on mechanical properties resulting composite and can sometimes make it toxic, which makes such polymers unsuitable biomedical applications. This focuses improvement composites using two-step with a rheomixer mix extruder. Polylactic acid (PLA), chitin, starch were produced after mixing, compression molding method decreasing composition...