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Filtering by: Subject Collagen -- Mechanical properties Remove constraint Subject: Collagen -- Mechanical properties Academic Affiliation Wood Science and Engineering Remove constraint Academic Affiliation: Wood Science and Engineering

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  • The effects of extractives and compatibilizers on the flexural properties of natural fiber-thermoplastic composites

    Creator:
    Saputra, Hartono A.
    Abstract:
    Natural fibers such as wood, flax, and hemp are frequently used as fillers in natural fiber-plastic composites (NFPCs). At present, wood fiber is the most commonly used filler in the production of wood-plastic composites (WPCs). The advantages of these fibers compared to conventional inorganic fibers such as glass fiber is...
    Resource Type:
    Masters Thesis
    Full Text:
    chapter of this thesis investigated the effect of extractives in wood flour on the mechanical properties

  • Cellulose reinforced high density polyethylene

    Creator:
    Palaniyandi, Velmurugan
    Abstract:
    High density polyethylene (HDPE) is a ubiquitous material with versatile properties. It is produced and used in greater volume than any other thermoplastic. HDPE is often filled with a variety of materials for various applications. Glass fiber and wood flour are two common fillers for HDPE. Recently there has been...
    Resource Type:
    Masters Thesis

  • Hygro-mechanical response of clear softwood specimens to compression under cyclic climate

    Creator:
    Guo, Ning
    Abstract:
    Hygro-mechanical effect is a general term applied to all phenomena that involves interaction between moisture content and mechanical characteristics of hygroscopic materials by analogy to thermo-mechanical effects. The hygromechanical effects include (but are not limited to) free shrinkage/swelling, effect of moisture on elastic modulus, strength, creep, failure mechanisms, and mechano...
    Resource Type:
    Masters Thesis
    Full Text:
    Title: Hygro-mechanical Response of Clear Softwood Specimens to Compression under Cyclic Climate

  • Improving wood strength and stiffness through viscoelastic thermal compression

    Creator:
    O'Connor, John P.
    Abstract:
    The objective of this research project was to increase the density, strength, and stiffness of two low to medium-density diffuse-porous hardwood species. Wood used in this study was processed using a method of wood densification known as “Viscoelastic Thermal Compression” (VTC). The VTC process is a three phase treatment which...
    Resource Type:
    Masters Thesis
    Full Text:
    ). The VTC process is a three phase treatment which incorporates saturated steam treatment, mechanical

  • Characterization of load transfer in wood-based composites

    Creator:
    Schwarzkopf, Matthew John
    Abstract:
    The mechanical performance of composite materials is determined by the mechanical properties of their individual components and the effective load transfer between these components. Binders are commonly used to bond composite components together and to provide effective load transfer between them. In wood-based composites the binder-component load transfer occurs at...
    Resource Type:
    Dissertation
    Full Text:
    : ________________________________________________________________________ Lech Muszyński The mechanical performance of composite materials is determined by the

  • Developing Design Model for Cellulose Nanocomposites

    Creator:
    Shir Mohammadi, Meisam
    Abstract:
    Today nano scale materials are being used for wide range of applications. One promising topic in nano scale materials is using them for reinforcement of different polymeric materials to reach desirable stiffness properties. The stiffness of these materials is mostly found experimentally because the nanocomposite community lacks a decent analytical...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 5.2.2 Nanocomposite Fabrication . . . . . . . . . . . . . . . . . . . . . 104 5.2.3 Mechanical

  • Interfacial shear strength of wood-plastic composites

    Creator:
    Rogers, James F.
    Abstract:
    This study examined the relationship of interfacial shear strength (IFSS) and bending strength (MOR) of several different wood-plastic composites (WPC's). Plastics utilized were high-density polyethylene (HDPE) and polypropylene (PP). Pine and oak were used as the wood species. Compatibilizers used included maleicanhydride polyethylene (MAPE), polymeric methylene diphenyl diisocyanate (PMDI), KymeneTM,...
    Resource Type:
    Masters Thesis
    Full Text:
    Polymers used in WPC's 7 1.3.3 WPC Formulation, Manufacture, and Use 7 1.3.4 Physical and Mechanical

  • Numerical modeling and experiments on wood-strand composites

    Creator:
    Le, Edward A.
    Abstract:
    In wood-based composites, the glue-line (interface) between wood-strands affects the stress transfer from one member to the next. The glue-line properties determine the rate of load transfer between phases and these properties depend on wood species, surface preparation, glue properties, glue penetration into wood cells, and moisture content of the...
    Resource Type:
    Dissertation

  • Functional decreases in hydraulic and mechanical properties of field-grown transgenic poplar trees caused by modification of the lignin synthesis pathway through downregulation of the 4-coumarate:coenzyme A ligase gene

    Creator:
    Voelker, Steven L.
    Abstract:
    Society uses massive quantities of wood fiber in production of paper, and demand for fiber is projected to increase further as production of biofuels from fermentation of plant cellulosic materials increases. Because these end uses generally require the costly step of removing of lignin, wood with reduced or more easily...
    Resource Type:
    Dissertation
    Full Text:
    Mechanical Properties of Field-grown Transgenic Poplar Trees Caused by Modification of the Lignin Synthesis

  • Development and characterization of new formaldehyde-free soy flour-based adhesives for making interior plywood

    Creator:
    Huang, Jian
    Abstract:
    Formaldehyde-based adhesives such as urea-formaldehyde (UF) and phenol-formaldehyde (PF) adhesives dominate the current wood adhesive market. However, these adhesives are derived from petrochemicals and carcinogenic formaldehyde. In this study, we developed two formaldehyde-free adhesives based on abundant, renewable, and inexpensive soy flour (SF). The first adhesive was mainly composed of...
    Resource Type:
    Masters Thesis
    Full Text:
    mechanical and chemical properties such as higher shear strength, and improved resistance to fire