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Reinforcement of Polylactic Acid for Fused Deposition Modeling Process with Nano Particles Treated Bamboo Powder (open access)

Reinforcement of Polylactic Acid for Fused Deposition Modeling Process with Nano Particles Treated Bamboo Powder

This article looks at the tensile properties and dynamic mechanical properties of bamboo powder (BP) reinforced polylactic acid (PLA) composite filaments which were treated with nano calcium carbonate (CaCO3), cellulose nanofibers (CNF), and micro-crystalline cellulose (MCC) using impregnation modification technology.
Date: July 4, 2019
Creator: Wang, Cuicui; Smith, Lee M.; Zhang, Wenfu; Li, Mingpeng; Wang, Ge; Shi, Sheldon et al.
Object Type: Article
System: The UNT Digital Library
Preparation and Characterization of 3D Printed PLA-Based Conductive Composites Using Carbonaceous Fillers by Masterbatch Melting Method (open access)

Preparation and Characterization of 3D Printed PLA-Based Conductive Composites Using Carbonaceous Fillers by Masterbatch Melting Method

This article highlights a study aimed at improving the conductivity of polylactic acid (PLA)-based composites by incorporating carbonaceous fillers. The composites with the addition of graphene nanoplatelets (rGO) or multi-walled carbon nanotubes (MWCNTs) were fabricated by the masterbatch melting method in order to improve the dispersion of the two kinds of nano-fillers. The results showed that, with the addition of 9 wt % rGO, the volume electrical resistivity of the composite reached the minimum electrical resistance of 10³ Ω·m, at which point the conductive network in the composites was completely formed.
Date: September 29, 2019
Creator: Guo, Rui; Ren, Zechun; Jia, Xin; Bi, Hongjie; Yang, Haiying; Ji, Tong et al.
Object Type: Article
System: The UNT Digital Library
Evaluation of Uniformity of Bamboo Bundle Veneer and Bamboo Bundle Laminated Veneer Lumber (BLVL) (open access)

Evaluation of Uniformity of Bamboo Bundle Veneer and Bamboo Bundle Laminated Veneer Lumber (BLVL)

In this article the density uniformity and mechanical properties of bamboo bundle veneers were systematically evaluated by the combination of light transmittance and mechanical stiffness. It was found that the number of broomings, dippings, and high-temperature heat treatments had different effects on the bamboo bundle veneers. On this basis, the uniformity of the density and mechanical properties of the bamboo scrimber (BS) that underwent hybrid paving, and the bamboo bundle laminated veneer lumber (BLVL), were analyzed.
Date: October 19, 2019
Creator: Zhou, Haiying; Wei, Xin; Smith, Lee M.; Wang, Ge & Chen, Fuming
Object Type: Article
System: The UNT Digital Library
Multi-Fold Enhancement in Compressive Properties of Polystyrene Foam Using Pre-delaminated Stearate Functionalized Layer Double Hydroxides (open access)

Multi-Fold Enhancement in Compressive Properties of Polystyrene Foam Using Pre-delaminated Stearate Functionalized Layer Double Hydroxides

Describes study in developing an environmentally benign styrene foam using supercritical CO2.
Date: December 19, 2019
Creator: Ogunsona, Emmanuel O.; Dagnon, Koffi L. & D'Souza, Nandika Anne, 1967-
Object Type: Article
System: The UNT Digital Library
Algorithmically Optimized Hemispherical Dome as a Secondary Optical Element for the Fresnel Lens Solar Concentrator (open access)

Algorithmically Optimized Hemispherical Dome as a Secondary Optical Element for the Fresnel Lens Solar Concentrator

This article focuses on a way to maximize the concentration acceptance product (CAP), while using the minimum SOE and receiver geometry at a given f-number and incidence angle (also referred to as the tracking error angle). The laws of polychromatic light refraction along with trigonometry and spherical geometry were utilized to optimize the POE grooves, SOE radius, receiver size, and SOE–receiver spacing.
Date: July 8, 2019
Creator: Qandil, Hassan; Wang, Shuping & Zhao, Weihuan
Object Type: Article
System: The UNT Digital Library
A Tough and Mildew-Proof Soybean-Based Adhesive Inspired by Mussel and Algae (open access)

A Tough and Mildew-Proof Soybean-Based Adhesive Inspired by Mussel and Algae

Describes the development of a strong mold-resistant adhesive by incorporating soybean meal and blood meal.
Date: March 31, 2020
Creator: Bai, Yue; Liu, Xiaorong; Shi, Sheldon & Li, Jianzhang
Object Type: Article
System: The UNT Digital Library
Lightweight, Anisotropic, Compressible, and Thermally-Insulating Wood Aerogels with Aligned Cellulose Fibers (open access)

Lightweight, Anisotropic, Compressible, and Thermally-Insulating Wood Aerogels with Aligned Cellulose Fibers

Proposes a fabrication method for making a lightweight, anisotropic, and compressible wood aerogel with aligned cellulose fibers by a simple chemical treatment.
Date: January 8, 2020
Creator: Sun, Hao; Bi, Hongjie; Lin, Xin; Cai, Liping & Xu, Min
Object Type: Article
System: The UNT Digital Library
A Tough, Water-Resistant, High Bond Strength Adhesive Derived from Soybean Meal and Flexible Hyper-Branched Aminated Starch (open access)

A Tough, Water-Resistant, High Bond Strength Adhesive Derived from Soybean Meal and Flexible Hyper-Branched Aminated Starch

This article highlights the development of a flexible long-chain starch with a hyper-branched structure (HD), and incorporating it with SM and a crosslinking agent to prepare a novel SM adhesive. Results showed that this adhesive exhibited both excellent water resistance and enhanced toughness. The wet bond strength of plywood fabricated using this adhesive was 354.5% higher than that of SM adhesive.
Date: August 14, 2019
Creator: Zhang, Yi; Zhang, Jieyu; Chen, Mingsong; Luo, Jing; Shi, Sheldon; Gao, Qiang et al.
Object Type: Article
System: The UNT Digital Library
Electrical and Thermal Conductivity of Polylactic Acid (PLA)-Based Biocomposites by Incorporation of Nano-Graphite Fabricated with Fused Deposition Modeling (open access)

Electrical and Thermal Conductivity of Polylactic Acid (PLA)-Based Biocomposites by Incorporation of Nano-Graphite Fabricated with Fused Deposition Modeling

This article describes a study to improve the electrical and thermal conductivity of the polylactic acid/wood flour/thermoplastic polyurethane composites by Fused Deposition Modeling (FDM). The results showed that, when the addition amount of nano-graphite reached 25 pbw, the volume resistivity of the composites decreased to 10⁸ Ω·m, which was a significant reduction, indicating that the conductive network was already formed. It also had good thermal conductivity, mechanical properties, and thermal stability.
Date: March 22, 2019
Creator: Guo, Rui; Ren, Zechun; Bi, Hongjie; Xu, Min & Cai, Liping
Object Type: Article
System: The UNT Digital Library
Soybean Meal-Based Wood Adhesive Enhanced by Phenol Hydroxymethylated Tannin Oligomer for Exterior Use (open access)

Soybean Meal-Based Wood Adhesive Enhanced by Phenol Hydroxymethylated Tannin Oligomer for Exterior Use

This article highlights a study of a bio adhesive was developed from soybean meal and larch tannin that was designed for exterior use. Phenol hydroxymethylated tannin oligomer (PHTO) was synthesized and then mixed with soybean meal flour in order to obtain a soybean meal-based adhesive (SPA). The results showed that the moisture absorption rate, residual rate, and solid content of SPA with 10 wt % PHTO (mass ratio with respect to the entire adhesive) were improved by 22.8%, 11.6%, and 6.8%, respectively, as compared with that of pure SPA.
Date: March 31, 2020
Creator: Chen, Mingsong; Zhang, Yi; Li, Yue; Shi, Sheldon; Li, Jianzhang; Gao, Qiang et al.
Object Type: Article
System: The UNT Digital Library
Fabrication of densified wood via synergy of chemical pretreatment, hot-pressing and post mechanical fixation (open access)

Fabrication of densified wood via synergy of chemical pretreatment, hot-pressing and post mechanical fixation

Article describes examination of the appearance, color, chemical composition, and physiology and mechanical properties of densified Abies wood before and after densification treatment using a colorimeter, FTIR and mechanical testing machine.
Date: January 30, 2020
Creator: Shi, Jiangtao; Peng, Junyi; Huang, Qiongtao; Cai, Liping & Shi, Sheldon
Object Type: Article
System: The UNT Digital Library
Molecular characteristics and function of elliptical Kiwifruit (open access)

Molecular characteristics and function of elliptical Kiwifruit

Article describes study analyzing the chemical components of elliptical kiwifruit (Actinidia chinensis Planch) using Fourier transform infrared spectroscopy (FT-IR) and gas chromatography mass spectrometry (GC–MS) technologies.
Date: January 28, 2020
Creator: Hu, Zhe; Ge, Shengbo; Yang, Jun; Li, Yiyang; Bi, Huitao; Zheng, Dongfang et al.
Object Type: Article
System: The UNT Digital Library
Research on solving differential equations of forest fire monitor based on Runge-Kutta (open access)

Research on solving differential equations of forest fire monitor based on Runge-Kutta

Article describes study analyzing the characteristics of the movement of the gel extinguishing agent micelles by considering the resistance of movement.
Date: August 20, 2020
Creator: Guan, Xuemei & Wei, Yanxiu
Object Type: Article
System: The UNT Digital Library
Pyrolysis molecule of Torreya grandis bark for potential biomedicine (open access)

Pyrolysis molecule of Torreya grandis bark for potential biomedicine

Article describes study where a powder of torreya grandis bark was prepared and analyzed qualitatively and quantitativelyiIn order to explore a new way to utilize said bark.
Date: January 9, 2019
Creator: Chen, Huiling; Yue, Xiaochen; Yang, Jun; Lv, Chunxia; Dong, Shuaiwei; Luo, Xuefeng et al.
Object Type: Article
System: The UNT Digital Library
Resistant energy analysis of self-pulling process during dropwise condensation on superhydrophobic surfaces (open access)

Resistant energy analysis of self-pulling process during dropwise condensation on superhydrophobic surfaces

Article describes an energy-based analysis on the formation and growth of condensate droplets on two-tier superhydrophobic surfaces, which are fabricated by decorating carbon nanotubes (CNTs) onto microscale fluorinated pillars.
Date: December 20, 2018
Creator: Vandadi, Aref; Zhao, Lei & Cheng, Jiangtao
Object Type: Article
System: The UNT Digital Library
Research Progress on Formaldehyde Emission of Wood-Based Panel (open access)

Research Progress on Formaldehyde Emission of Wood-Based Panel

This article explores current research progress on the mechanism and influencing factors of formaldehyde emission from wood-based panel. The research provides technical support to improve interior decoration and furniture design.
Date: July 22, 2018
Creator: Zhang, Jijuan; Song, Feifei; Tao, Jing; Zhang, Zhongfeng & Shi, Sheldon
Object Type: Article
System: The UNT Digital Library
Computational Fluid Dynamics, potential flow and system-based simulations of fully appended free running 5415M in calm water and waves (open access)

Computational Fluid Dynamics, potential flow and system-based simulations of fully appended free running 5415M in calm water and waves

Article assesses the capabilities of computational fluid dynamics (CFD), potential flow (PF), and system-based (SB) methods for course keeping in calm water and regular and bi-chromatic waves for 5415M as a benchmark test case for AVT-161.
Date: December 27, 2018
Creator: Toxopeus, Serge; Sadat Hosseini, Seyed Hamid; Visonneau, Michel; Guilmineau, Emmanuel; Yen, Tin-Guen; Lin, Woei-Min et al.
Object Type: Article
System: The UNT Digital Library
Effect of surfactants on pressure-sensitivity of carbon nanotube filled cement mortar composites (open access)

Effect of surfactants on pressure-sensitivity of carbon nanotube filled cement mortar composites

In this article, the pressure-sensitivity of CNT filled cement mortar composites with different concentrations of MWNT and different surfactants is investigated under repeated loading and impulsive loading, respectively. Experimental results indicate that the response of the electrical resistance of composites with NaDDBS to external force is more stable and sensitive than that of composites with SDS. Therefore, NaDDBS has higher efficiency than SDS for the dispersion of MWNT in cement mortar, and it is an effective surfactant for fabricating MWNT filled cement mortar composites with superior pressure-sensitivity.
Date: November 6, 2014
Creator: Han, Baoguo & Yu, Xun
Object Type: Article
System: The UNT Digital Library
Energy Conversion During Expansion of a Solid-Particle-Entrained Gas (open access)

Energy Conversion During Expansion of a Solid-Particle-Entrained Gas

This article describes pneumatic energy being converted into solid particle kinetic energy as a solid-particle-entrained gas that flows downward through a vertical nozzle. For the conditions studied, the solid particles serve as a heat exchange medium to enable a gas expansion that is nearly isothermal. Also, the kinetic energy associated with the two-phase fluid is predominantly that associated with subsonic solid-particle motion. The kinetic energy of the solid particles is converted into other forms using a low-speed turbine. A theoretical description of the process is presented, and the initiation of an experimental effort to study the process is described.
Date: January 10, 2013
Creator: Ordonez, Carlos A.; Weathers, Duncan L. & Traum, Matthew J.
Object Type: Article
System: The UNT Digital Library
Durable, High Conductivity, Superhydrophobicity Bamboo Timber Surface for Nanoimprint Stamps (open access)

Durable, High Conductivity, Superhydrophobicity Bamboo Timber Surface for Nanoimprint Stamps

This article discusses the fabrication of superhydrophobic bamboo timber by magnetron sputtering and nanoimprint stamps. It was expected that this work could promote the applications of superhydrophobic and conductive bamboo products.
Date: December 6, 2017
Creator: Bao, Wenhui; Liang, Daxin; Zhang, Ming; Jiao, Yue; Wang, Lijuan; Cai, Liping et al.
Object Type: Article
System: The UNT Digital Library
Electrode and electrolyte configurations for low frequency motion energy harvesting based on reverse electrowetting (open access)

Electrode and electrolyte configurations for low frequency motion energy harvesting based on reverse electrowetting

This article explores various combinations of electrolyte concentrations, dielectrics, and dielectric thicknesses to generate maximum output power employing REWOD energy harvester with the objective of implementing a fully self-powered wearable sensor.
Date: March 3, 2021
Creator: Adhikari, Pashupati R.; Tasneem, Nishat Tarannum; Reid, Russell C. & Mahbub, Ifana
Object Type: Article
System: The UNT Digital Library
A simple design of mechanically robust, recyclable, and biodegradable composite films with high thermal stability and fluorescent properties (open access)

A simple design of mechanically robust, recyclable, and biodegradable composite films with high thermal stability and fluorescent properties

This article proposes a strategy for preparing advanced soy protein (SP)-based films by solution casting of SP and hydroxyl and primary amine-containing hyperbranched polysiloxane (HPSA). It offers a simple methodology for the design of mechanically robust, recyclable, and biodegradable composite films, which have potential applications in the fabrication of high-performance, high-transparency, and anti-counterfeiting packaging materials.
Date: March 11, 2021
Creator: Li, Jiongjiong; Jiang, Shuaicheng; Zhou, Ying; Li, Xiaona; Shi, Sheldon & Li, Jianzhang
Object Type: Article
System: The UNT Digital Library
Carbon Capture Utilization for Biopolymer Foam Manufacture: Thermal, Mechanical and Acoustic Performance of PCL/PHBV CO2 Foams (open access)

Carbon Capture Utilization for Biopolymer Foam Manufacture: Thermal, Mechanical and Acoustic Performance of PCL/PHBV CO2 Foams

This article uses PCL to blend into PBHV. Both unfoamed and foamed blends are examined. The results provide a pathway to multifunctional performance in foams of high performance biopolymers such as PBHV through harnessing the CO₂ miscibility of PCL.
Date: July 31, 2021
Creator: Oluwabunmi, Kayode E.; Zhao, Weihuan & D'Souza, Nandika Anne, 1967-
Object Type: Article
System: The UNT Digital Library
Longitudinal Monostatic Acoustic Effective Bulk Modulus and Effective Density Evaluation of Underground Soil Quality: A Numerical Approach (open access)

Longitudinal Monostatic Acoustic Effective Bulk Modulus and Effective Density Evaluation of Underground Soil Quality: A Numerical Approach

This article introduces a novel method using longitudinal sound to detect underground soil voids to inspect underwater bed property in terms of effective bulk modulus and effective density of the material properties.
Date: December 25, 2020
Creator: Jin, Yuqi; Choi, Tae-Youl & Neogi, Arup
Object Type: Article
System: The UNT Digital Library