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Filtering by: Creator Karchesy, Joe Remove constraint Creator: Karchesy, Joe Academic Affiliation Wood Science and Engineering Remove constraint Academic Affiliation: Wood Science and Engineering

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  • Analysis and comparison of essential oil components extracted from the heartwoods of Leyland cypress, Alaska yellow cedar, and Monterey cypress

    Creator:
    Liu, Xinfeng
    Abstract:
    The essential oil components of cedar heartwoods play an important role in the durability of these trees. Yet, the composition of these oils and identity of many of the compounds remains unknown, or incompletely know for some commercially important cedar heartwoods. The essential oil extracts of Alaska Yellow Cedar (Chamaecyparis...
    Resource Type:
    Masters Thesis
    Full Text:
    Monterey Cypress. Abstract approved: ___________________________ Joseph J. Karchesy

  • Environmental effects on heartwood extractive content and their consequences for natural durability in Douglas-fir and western redcedar

    Creator:
    Taylor, Adam McVaugh, 1969-
    Abstract:
    Heartwood can have properties that are distinct from sapwood, including resistance to insect and microbial attack. Despite the practical importance of heartwood formation in trees, a review of the literature revealed that little was known about the effects of environmental factors on heartwood quality or how variations in heartwood properties...
    Resource Type:
    Dissertation
    Full Text:
    members, Renée Brooks, Joe Karchesy and Claire Montgomery, for the guidance and support. This research

  • Poly(vinyl alcohol) / cellulose nanocomposite barrier films

    Creator:
    Paralikar, Shweta
    Abstract:
    There is a continual interest in developing robust, flexible, durable, lightweight, waterborne polymer barrier coatings which are increasingly resistant towards both chemical warfare agents as well as an ever growing number of toxic industrial chemicals. In this study, barrier films were prepared with poly(vinyl alcohol) (PVOH) and varying amounts of...
    Resource Type:
    Masters Thesis
    Full Text:
    . Joe Karchesy, Dr. Christine Kelly and Dr. David Cann for agreeing to serve on my committee and for

  • Development and evaluation of a new formaldehyde-free wood adhesive from renewable materials for making interior plywood

    Creator:
    Jang, Yonghwan
    Abstract:
    Synthetic adhesives, such as phenol-formaldehyde (PF) resins and urea-formaldehyde (UF) resins, have dominated the wood adhesive market since they were introduced in the wood products industry. Formaldehyde, as a key component in the manufacturing of PF and UF resins, has been classified as a known human carcinogen by the International...
    Resource Type:
    Masters Thesis
    Full Text:
    revising my thesis. I would like to sincerely thank Dr. Willie E. Skip Rochefort, Dr. Joe Karchesy, and

  • Improved interfacial adhesion in wood-plastic composites : Development of new compatibilizers

    Creator:
    Zhang, Cheng
    Abstract:
    In wood-plastic composites (WPCs) a compatibilizer is often used to improve the interfacial adhesion between the hydrophilic wood filler and the hydrophobic plastic matrix. At present, while the basic concepts of compatibilization are understood, the optimized chemical structures of an effective compatibilizer, including the ideal structures of the wood-binding domain...
    Resource Type:
    Dissertation
    Full Text:
    , Joe Karchesy and Dr. Skip Rochefort. I am grateful to my fellow graduate students and group members

  • New application of crystalline cellulose in rubber composites

    Creator:
    Bai, Wen
    Abstract:
    Rubber without reinforcement has limited applications. The strength of reinforced rubber composites can be ten times stronger than that of unreinforced rubbers. Therefore, rubber composites are widely used in various applications ranging from automobile tires to seals, valves, and gaskets because of their excellent mechanical elastic properties. Silica and carbon...
    Resource Type:
    Dissertation
    Full Text:
    . I would also like to extend my appreciation to my committee members, Dr. Everett Hansen, Dr, Joe

  • 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

  • Investigation of new compatibilizer systems for wood-polyethylene composites

    Creator:
    Geng, Yu
    Abstract:
    Wood-plastic composites (WPCs) are one of the fastest-growing sectors of the wood composites industry. However, the strengths of WPCs are typically low because of the poor interfacial adhesion between hydrophilic wood and hydrophobic thermoplastics. A compatibilizer that can form bridges between wood and plastics is required to give WPCs desirable...
    Resource Type:
    Dissertation
    Full Text:
    , and my committee members, Dr. Joe Karchesy, Dr. Skip Rochefort, Dr. Mark Zabriskie, for their advice

  • Development and evaluation of novel coupling agents for kenaf-fiber-reinforced unsaturated polyester composites

    Creator:
    Ren, Xiaofeng
    Abstract:
    Natural fibers are gaining popularity as reinforcement materials for thermoset resins over the last two decades. Natural fibers are inexpensive, abundant, renewable and environmentally friendly. Kenaf fibers are one of the natural fibers that can potentially be used for reinforcing unsaturated polyester (UPE). As a polymer matrix, UPE enjoys a...
    Resource Type:
    Dissertation
    Full Text:
    for my whole lifetime. I would like to thank Dr. Joseph Karchesy, Dr. John Nairn, Dr. Willie E. Skip

  • 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:
    will definitely be beneficial to my future work and life. I would like to thank Dr. Joe Karchesy

  • Cellulose/polysulfone nanocomposites

    Creator:
    Noorani, Sweda
    Abstract:
    Microchannel devices are rapidly evolving process technology with a wide variety of applications. Microchannel devices hold the potential to transform many separation processes. One potential application for such microchannel devices is kidney dialysis. By reducing the size and cost of the device, this technology offers the potential to allow dialysis...
    Resource Type:
    Masters Thesis
    Full Text:
    Joe Karchesy : I would like to thank Dr Skip and Dr Karchesy for agreeing to serve on my academic

  • 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:
    goals would be finished. Professors Skip Rochefort and Joe Karchesy also are due many thanks for being

  • Improving the durability of second growth timbers of naturally durable species

    Creator:
    Cabrera Orozco, Yohanna
    Abstract:
    While the heartwood of many wood species exhibits excellent resistance to fungal and insect attack, this resistance is sometimes diminished in second-growth material of the same species. The reasons for the reduced durability are unclear, but they may reflect a combination of both higher proportions of sapwood as well as...
    Resource Type:
    Masters Thesis
    Full Text:
    , including: Joe Karchesy, Sheeba Veluthoor, and Xienfeng Liu, who helped me with wood extraction; Mathew

  • Limiting copper loss from treated wood in or near aquatic environments

    Creator:
    Mitsuhashi Gonzalez, June M.
    Abstract:
    Copper migration from treated wood has created concerns within the environmental community because of the potential effects of this heavy metal on aquatic organisms. Migration can be limited, to some extent, by more controlled treatments and by post-treatment processing, but these actions cannot completely overcome the problem. An alternative approach...
    Resource Type:
    Masters Thesis