Posters will be available for viewing during the March 24 Welcoming Reception and the following day. Presenters will be in attendance on March 25 from 4:30 – 5:30 p.m to discuss their research and address questions.
Tensile Testing as a Versatile Evaluation of Compression Stockings
Rodica Harpa (presenter), Cristina Piroi and Cezar Doru Radu, Gheorghe Asachi Technical University of IASI, Romania
The features of medical compression stockings are of interest since these products are regularly worn and washed, while the gradual compression capacity must remain unchanged. Therefore, a suitable assessment of their quality should consider the main quality-required features—the achievement of gradual compression and its preservation. Our research addressed tensile testing (axial and multi-axial) as a versatile indicator of the mechanical behavior of compression stockings, almost similar to wear. Experiments were performed using the strip method and the grab method. The results revealed the gradual compression achievement of several experimental pantyhose products and established the amount of gradual compression changes after wearing and washing processes, as well as the connection between stockings performance and the patients’ type dimension range.
Synthesis and Application of Substituted Graphene Oxide to Effect Water Repellent Properties on Cotton Fabric
Nathaniel Soboyejo (presenter), Aderemi Oki, Candice Rasco, and Christollite Addo, Prairie View A&M University, Department of Chemistry, Texas, USA
Previous investigation showed that octadecylammonium swcnt ion pairs, grafted to cotton fabric, acquired water repellent properties. Graphene oxide, a cheaper alternative, was prepared via mixed acid oxidation of graphite powder. The resultant graphene oxide had carboxylic acid and hydroxyl groups on the periphery of its basal plane, modified with long alkyl compounds. Structural analysis of the functionalized graphene compounds was confirmed by the use of IR spectroscopy and TGA analysis. Application of the synthesized compounds was carried out. SEM images were captured and thermal properties studied. Fabric was tested using AATCC Test Method 79-2010, Absorbency of Textiles. Water contact angles of the samples were measured. Potential applications include protective clothing, and moisture control and management.
Comparison of Two Brands of Denim Jeans for Selected Performance Attributes
Usha Chowdhary (presenter) and Celeste Hay, Central Michigan University, USA
Availability of similar apparel at varying prices confuses consumers regarding price and quality relationships of the products. Very limited information was found on this in the reviewed literature. Therefore, this study compared two well-known brands of denim jeans for abrasion resistance, pilling resistance, wet crockfastness, and stretch and recovery using industry standards (AATCC and ASTM). Four hypotheses were developed. Both descriptive and inferential statistics were used for data analyses. Hypotheses were tested using t-tests—only one of the four hypotheses was rejected. Crockfastness results were the most surprising; despite their high price tags, both jeans tested failed. The jeans also differed for stretch and abrasion resistance. Findings have implications for future extension of the work.
Textile Performance and Fit Implications in Rock Climbing Pants
Dawn Michaelson (presenter) and Karla P. Teel, Auburn University, USA
Rock climbing requires full body mobility while climbing abrasive rock formations. Climbing pants should not impede climbing movements while protecting the lower body. Currently, there is no published data on rock climbing pant performance or fit. This study investigated pant textile performance, mobility, and fit using a survey of 185 active rock climbers. Climbers reported overall textile performance to abrasion, rip, and tears to be somewhat durable, with the knees, legs, and seat having the most frequent wear. Pant mobility, while climbing, was rated mildly to moderately acceptable depending on the movement. Fit was mildly satisfying with the waist being most problematic, followed by pant length and crotch. Future studies into textile selection and pant design could lead to improved pant performance and satisfaction.
Comparing the Impact of Dyeing and Printing on Raw and Cultivated Silk for the Selected Fabric Attributes
Ann Marie Servant (presenter), Usha Chowdhary, Central Michigan University, USA
The study compared raw (sericin not removed) and cultivated (degummed) silks for their breaking strength, colorfastness to crocking, horizontal wicking, stretch and recovery, and water repellency using AATCC and ASTM standards. White raw and cultivated silk were dyed and printed with same procedure prior to testing. Based on the literature review, five alternate hypotheses were developed. Data were analyzed using t-tests. Only two of the five hypotheses were accepted. Additionally, stretch in weft was significantly higher for raw silk. Both fabrics passed crockfastness and breaking strength tests. Implications for future research will be discussed for the fabric that has been used for elegant and luxurious apparel for centuries. Future work will also test the impact of dyeing and printing on selected performance attributes.
Measuring the Restriction of Jumping Motions while Wearing the Ballistic Vest
Su Kyoung An (presenter), Tanya Domina, Hae Joo Lee, Molly Smith, and Kaley Sheldon, Central Michigan University, USA; and Seung Bong Ko, Texas A&M University, USA
Although a ballistic vest is designed to protect the wearer, the wearer’s performance is decreased since bulletproof fibers and plates are extremely restrictive in terms of mobility. The purpose of this research is to examine the restrictions in performance exerted on the wearer wearing the ballistic vest by measuring range of motion. Fourteen participants performed three replication of forward and side jumping movements in three garment conditions. The finding concluded that the individuals perform movements differently depending on the garment conditions and were differently restricted by protective garments and additional protection. As a result, the increased protection negatively influenced restriction of movement. Although current ballistic vests were advanced, there are still restrictions involved when performing movements.
The Relationship between Human Deaths, Premature Graft Failures and Yarn Irregularity
Mashiur Rahman (presenter) and M. Islam, University of Manitoba, Canada
An investigation was made to find out the causes of premature polyester graft failures that resulted in numerous human deaths. One of the reasons for graft failures was the yarn failure that was used to manufacture the grafts. Yarn strength measured from the virgin (high: 33.7 N, low: 8.5 N) and hydrolyzed (high: 10.3 N, low: 3.9 N) vascular fabric revealed a large variation. Maximum and minimum local peak data showed that up to a 50% drop in breaking load occurred for virgin and hydrolyzed samples. Further, some virgin samples failed to survive 2 hours when the holding load was ≥ 90% of the virgin samples. It was concluded from the results that the yarn irregularities in the vascular graft fabrics were responsible for premature graft failures.
Green Cross-linking of Plant Waste (Mango Seeds) for Composite Applications
Namrata Patil (presenter), Cornell University, Ithaca, NY, USA
Currently used composites, which end up in landfills after their life, are derived from petroleum sources. As they are not biodegradable, they make the land useless, or, if incinerated, they produce toxic gases. This research focused on fabricating composites using mango seeds. Mangoes are eaten raw or processed for making jams, jellies, juices, pulp, and ice creams, and the seeds are discarded as waste. Making a composite out of the discarded seeds can reduce the amount of waste and indirectly reduce petroleum consumption. The seed waste was crosslinked using green acid and reinforced with naturally-available, inexpensive nanoparticles. The resulting tensile property was found to increase remarkably. Composite applications include construction, sports, automotive, aerospace, marine, and electronics.
Antimicrobial: Controlled-Release of Silver Ions Using Polymer-Based Technology
David L. Frattarelli (presenter), Dow Chemical
SILVADUR Antimicrobial is a revolutionary microbial control technology that provides long lasting freshness and reliable protection against unwanted bacteria on woven and non-woven fibers such as bedding, apparel, footwear, carpets, draperies, filters, insulation, and more. This polymer-based antimicrobial uses a patented delivery system to transport and secure silver ions to a treated article. Silver helps neutralize odor-causing compounds and helps prevent the growth of odor-producing bacteria. When incorporated into industrial and household materials during the manufacturing process, this novel system controls the release of silver to avoid discoloration and early exhaustion typical of other silver products.
Sorbents for Oil Spill Clean-up
Ameya Chavda (presenter), The Hockaday School; Aarav Chavda, Princeton University; Vinitkumar Singh and Seshadri Ramkumar, Texas Tech University
Toxic oil and chemical spills have become part of our daily life. Today, there is a need for more ecologically friendly and effective ways of cleaning up oil spills. Cotton is a superb biodegradable sorbent that could have applications in large-scale oil spill remediation. Cotton’s absorption capabilities are directly related to the maturity and quality of the cotton, opening a great opportunity for the use of low micronaire cotton. Use of different type of fibers and nonwoven structures, including low micronaire and base range cottons, were evaluated for their oil and water absorption capabilities. A wide variety of oils were used in the study. Overall results showed that low micronaire cotton, because of its enhanced surface area, absorbed more oil than base range cotton.