ผลของขนาดอนุภาคดิสเพอร์ชันที่มีต่อกระบวนการผลิต และคุณภาพของถุงมือยางทางการแพทย์ที่ผลิตจากน้ำยางธรรมชาติ / ชมพูนุท สัญจร = Effect of dispersion particle size on processing and quality of medical natural rubber latex gloves / Chompunoot Sanjorn
The main objective of this research was to study the effect of dispersion particle size on processing and quality of medical natural rubber latex gloves. Determination of the optimal dispersion particle size suitable for the production of natural rubber gloves which meet the requirement of TIS 1056-2540 was studied. Solid substance added in to natural rubber latex must be in dispersion form because the rubber particle is very small within colloidal system. An addition of powder chemical may also cause coagulation therefore it is necessary that solid substance must be in dispersion form which normally done by using ball mill. The gloves produced from this study were fabricated by certain setting compound latex formulas. The experiment was conducted by varying the maturation time of compound latex at 4, 5, 6 and 7 days and varying the dispersion particles size of vulcanization system, i.e. Sulfur dispersion particle size of 4.69, 3.78, 2.60 and 2.48 µm, ZDEC dispersion particle size of 3.30, 2.32, 1.58 and 1.38 µm, ZnO(WS) dispersion particle size of 1.25, 1.19, 0.85 and 0.80 µm. The properties of the produced gloves such as degree of vulcanization, tensile properties (before and after aging at 100 °C for 22 hour) 1 and surface of rubber gloves were determined. It was found that the gloves produced by compounding with Sulfur dispersion particle size of 3.78 µm or less, ZDEC dispersion particle size of 3.3 µm or less, ZnO(WS) dispersion particle size of 1.25 µm or less, that were be matured within 6-7 days. By using these conditions, the produced gloves show tensile properties met the requirement of TIS 1056-2540. It was also observed that there is no different of surface of rubber gloves produced from different particles size of vulcanization system.
