An improved test method for characterising touch properties of porous polymeric materials

Yao, Bao-guo; Zhang, De-pin; Yang, Yun-juan; Wang, Jianchao; Hong, Shui-yuan; Shan, Zhang

doi:10.1016/j.polymertesting.2017.01.010

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The infrared absorption spectra of the samples were recorded using a Fourier-transform infrared (FTIR) spectrometer (6700, Thermo Fisher, USA) (Yao et al 2017).Prior to analysis, the powder samples were mixed with potassium bromide. The spectral measurements were recorded in the range of 350-7800 cm -1 , in a dry environment, at the accuracy of 0.01 cm -1 , and at room temperature (25 ± 0.5°C).…”

Section: Ftirmentioning

confidence: 99%

Fabrication of Gelatin Microspheres 1 Containing Ammonium Hydrogen Carbonate for the Tunable Release of Herbicide

Zhang

Yang

et al. 2021

Preprint

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The major challenge in utilizing pesticides lies in identifying the precise application that would improve the efficiency of these pesticides and reduce their environmental and health hazards at the same time. Such application requires the development of specific formulations that enable controlled, stimuli-responsive release of the pesticides. Gelatin is a relatively cheap material characterized by temperature-sensitivity and abundant amino acid groups, which makes it suitable for the storage and controlled release of pesticides. In this study, gelatin microspheres were prepared by emulsion and cross-linking, then they were loaded with 2,4-dichlorophenoxyacetic acid sodium (2,4-D Na) as a model herbicide. To achieve temperature-tunable release of 2,4-D Na from the microspheres, NH4HCO3 was added to the formulations at different concentrations. The prepared formulations were characterized by SEM, FTIR, and size distribution analyses, and their drug loading capacities were determined. Based on bioassay experiments, the 2,4-D Na-NH4HCO3-loaded gelatin microspheres can effectively control the spread of dicotyledonous weeds. Therefore, the strategy proposed herein can be used to develop novel, effective herbicide formulations.

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Section: Ftirmentioning

confidence: 99%

Fabrication of Gelatin Microspheres 1 Containing Ammonium Hydrogen Carbonate for the Tunable Release of Herbicide

Zhang

Yang

et al. 2021

Preprint

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“…Therefore, a new test method was proposed and a mechanical measurement system called the Material Tactile Tester (MTT) was developed to objectively characterize the tactile properties of porous polymeric materials for the improvement of FTT in industrial applications. The test method, the evaluation indices definitions, the grading and classification methods, the subjective evaluation experiments and the prediction model were introduced in [ 41 ]. This paper focuses on the test and evaluation method, the design of the mechanical measurement system, the definition and grading of objective indices for tactile properties, the objective experiments, the correlations with Kawabata KES test methods, the intra-laboratory test, and the precision analysis of critical differences for single operator and within laboratory.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Measurement System and Precision Analysis for Tactile Property Evaluation of Porous Polymeric Materials

2018

Self Cite

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Tactile properties are one of the most important attributes of porous polymeric materials such as textiles, comprising a subjective evaluation index for textile materials and functional clothing, primarily affecting the sensation of comfort during the wearing of a garment. A new test method was proposed, and a mechanical measurement system was developed to objectively characterize the tactile properties of porous polymeric materials by simulating the dynamic contact processes during human skin contact with the materials and in consideration of different aspects of tactile sensations. The measurement system can measure the bending, compression, friction, and thermal transfer properties in one apparatus, and is capable of associating the objective measurements with the subjective tactile sensations. The test and evaluation method, the components of the mechanical measurement system, the definition and grading method of the evaluation indices, and the neural network prediction model from objective test results to subjective sensations of tactile properties were presented. The experiments were conducted for the objective tests and correlation tests. Seven types of porous polymeric sheet materials from seven categories for the tactile properties were cut to a size of 200 mm × 200 mm and tested. Each index of tactile properties was significantly different (P < 0.05) between different sheet materials. The correlations of bending, compression, friction, and thermal transfer properties with Kawabata KES test methods were analyzed. An intra-laboratory test was conducted and an analysis of the variance was performed to determine the critical differences of within laboratory precisions of the measurement system. This mechanical measurement system provides a method and system for objective measurement and evaluation of tactile properties of porous polymeric sheet materials in industrial application.

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“…13 introduced the Fabric Touch Tester (FTT) to characterize the touch properties of textile materials, but the FTT uses different modules to measure different properties, which is actually an integration of the separate devices. 14 More recently, several emerging devices, such as the Comprehensive Handle Evaluation System for Fabrics and Yarns (CHES-FY), 15,16 Wool HandldMeter 17,18 and Leeds University Fabric Handle Evaluation System (LUFHES), 19 have been designed to evaluate the touch perception performance of fabrics using one instrument. However, there are some issues that still need to be addressed by further studies, as follows.…”

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confidence: 99%

Simultaneous-integrated evaluation of mechanical–thermal sensory attributes of woven fabrics in considering practical wearing states

Liu

Sun

2021

Textile Research Journal

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Tactile sensations of fabrics are the primary property determining the wearing comfort of clothing; however, comprehensive evaluation of the fabric tactile property by considering the flexural buckling of fabrics under high curvature, hysteresis performance and thermal property has not been fully studied, leading to a clear gap between the existing measurement methods and application requirements. Herein, a simultaneous-integrated testing method, namely the Touch Sensation Tester for Fabrics (TST-F) was introduced to evaluate the mechanical–thermal sensory properties of woven fabrics. The introduced instrument used one device with a single mechanical sensor to test various mechanical properties by constructing different deformations of fabrics, and the thermal property was simultaneously measured using an infrared detector array, achieving an efficient characterization of the mechanical–thermal sensation properties of textiles. The measurement capacity and repeatability of the TST-F were statistically analyzed; the measurement indices and their relation with fabric mechanical–thermal sensation properties were also exhibited. Results showed that the TST-F was promising to characterize fabric touch sensations in terms of bending stiffness, compression softness with wrinkling, stretching tightness and thermal comfort by considering the infrared transmission and heat conductivity of textiles.

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An improved test method for characterising touch properties of porous polymeric materials

Cited by 5 publications

References 14 publications

Fabrication of Gelatin Microspheres 1 Containing Ammonium Hydrogen Carbonate for the Tunable Release of Herbicide

Fabrication of Gelatin Microspheres 1 Containing Ammonium Hydrogen Carbonate for the Tunable Release of Herbicide

Mechanical Measurement System and Precision Analysis for Tactile Property Evaluation of Porous Polymeric Materials

Simultaneous-integrated evaluation of mechanical–thermal sensory attributes of woven fabrics in considering practical wearing states

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