A5082805447- Polymer composites and self-healing
- biodegradable polymer synthesis and properties
- Carbon dioxide utilization in catalysis
- Membrane Separation Technologies
- Adsorption and biosorption for pollutant removal
- Microplastics and Plastic Pollution
- Lignin and Wood Chemistry
- Polydiacetylene-based materials and applications
- Advanced Graph Theory Research
- Catalysis for Biomass Conversion
- Graph theory and applications
- Corrosion Behavior and Inhibition
- Graph Labeling and Dimension Problems
Mindanao State University – Iligan Institute of Technology
2017-2023
University of the Philippines Los Baños
2023
Coconut oil, a low-molecular-weight vegetable is virtually unutilized as polyol material for flexible polyurethane foam (FPUF) production due to the high-molecular-weight requirement of FPUFs. The saturated chemistry coconut oil also limits its compatibility with widely used polyol-forming processes, which mostly rely on unsaturation functionalization. Existing studies have only exploited this resource in producing polyols rigid synthesis. In present work, polyester were synthesized from...
Coconut oil (CO) has become one of the most important renewable raw materials for polyol synthesis due to its abundance and low price. However, saturated chemical structure CO limits capability functionalization. In this study, a novel reaction mechanism via sequential glycerolysis amidation triglycerides produced an amine-based (p-CDEA). The synthesized biopolyol relatively higher hydroxyl value 361 mg KOH per g relative previously reported CO-based polyols with values ranging from 270-333...
This study presents a novel polyurethane-activated carbon composite (PACC) as an effective and sustainable adsorbent for treating lead-ion-contaminated waters. The PACC was characterized using Scanning Electron Microscopy with Energy Dispersive X-ray (SEM-EDX), Fourier Transform Infrared Spectroscopy (FTIR), Brunauer, Emmett, Teller (BET) surface area analyzer, Diffraction (XRD), Thermogravimetric Analyzer (TGA) to evaluate its physicochemical thermal properties. Furthermore, the employed in...
The production of biodiesel generates glycerol as a by-product that needs valorization. Glycerol, when converted to polyglycerol, is potential polyol for bio-based thermoplastic polyurethane (TPU) production. In this study, novel polyglycerol polyester (PPP) was developed from refined and coconut oil-based polyol. Glycerol first acetate then polymerized with (CPP) secondary phthalic anhydride. resulting PPP at 220 °C OH:COOH molar ratio 2.5 exhibited an OH number <100 mg KOH·g sample
Conventionally, designing rigid polyurethane foams (RPUFs) with improved physico-mechanical properties from new, bio-based polyols is performed by modifying foam formulations via experimentation. However, experimental endeavors are very resource-dependent, costly, cumbersome, time-intensive, waste-producing, and present higher health risks. In this study, an RPUF formulation utilizing a coconut-oil (CO)-based polyol was approximated through computational alternative in the lens of gel time...
Polymers derived from plant oils have attracted major commercial interest and significant attention in scientific research because of the availability, biodegradability, unique properties triglycerides. Triglycerides rich unsaturated fatty acids, such as soybean oil (SBO), are particularly susceptible to chemical modification for desired polymeric materials. Soy-based polyols important industrial prepolymeric materials that use renewable resources; can be produced or through different...
To attain efficient removal of hexavalent chromium (Cr6+) from aqueous solutions, a novel polyurethane foam-activated carbon (PUAC) adsorbent composite was developed. The material synthesized by the binding coconut shell-based activated (AC) onto oil-based matrix. thoroughly characterize physicochemical properties newly developed material, various analytical techniques including FTIR spectroscopy, SEM, XRD, BET, and TGA analyses were conducted. efficiency PUAC in removing Cr6+ ions solutions...
Rivers are essential sources of plastic litter in the marine environment. Recently, Philippines was reported as biggest polluter from riverine sources. However, litter's origin has been less established. In this study, we determined density, composition, and accumulation on riversides Pulot River its tributary Palawan Island, Philippines. We also identified possible litter. Results showed that density highest at river edge during first sampling period. Litter densities for predefined zones...
Polyurethane has been used for years as an anti-corrosion coating due to its intrinsic hydrophobic properties. However, hydrophobicity is not enough inhibit the permeation of corrosive agents; thus, incorporating it with polyurea would further enhance In this study, coconut oil, a saturated, low molecular weight vegetable was employed eco-friendly precursor synthesizing novel poly(urethane-urea)- based hybrid coating. The synthesis process involved utilization oil-based polyol blend,...
This study presents a novel polyurethane-activated carbon composite (PACC) as an effective and sustainable adsorbent for treating lead-ion-contaminated waters. The PACC was characterized using SEM-EDX, FTIR, BET, XRD, TGA to evaluate its physicochemical thermal properties. Furthermore, the employed in experimental column adsorption setup investigate performance develop dynamic method suitable industrial implementation. Parameters such bed height (50, 100, 150 mm), flow rate (4, 6, 8 mL...
In this study, an eco-friendly coconut oil-based polyol blend was synthesized for bio-based waterborne polyurethane (WBPU) and WBPU-silane composite coatings. It demonstrated that increase in silane content incorporated into the WBPU matrix significantly enhanced corrosion protection of Results also show a fourfold adhesion strength coatings as compared to bare Further, water contact angle revealed hydrophobic properties increases. This work provides novel route utilizing blend.