THE MANUFACUTE OF GLOVES USING RVNRL: PARAMETERS OF the COAGULANT DIPPING PROCESS

Chirinos, Hugo; Guedes, S.M.L.

doi:10.1590/s0104-66321998000400003

Cited by 4 publications

(5 citation statements)

References 1 publication

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“…Based on this observation, the 5 secs dwell time of NRL dipping produced an increased fluorescence emission when torn than other dwell times. We suggest that this is due to the thicker NRL film layer, which yields an increased fluorescence effect when torn; other works have indicated a positive correlation between fluorescence intensity and film thickness, which we suspect is possibly the case here [ 39 , 40 ]. Even though “15_5_15” dwell time ( LC7 and LC8 ) showed the highest emission intensity when torn, the thickness (0.25–0.26 mm) of the films were quite thick for glove production.…”

Section: Resultsmentioning

confidence: 53%

Wearable Natural Rubber Latex Gloves with Curcumin for Torn Glove Detection in Clinical Settings

et al. 2022

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Glove tear or perforation is a common occurrence during various activities that require gloves to be worn, posing a significant risk to the wearer and possibly others. This is vitally important in a clinical environment and particularly during surgical procedures. When a glove perforation occurs (and is noticed), the glove must be replaced as soon as possible; however, it is not always noticeable. The present article is focused on the design and development of a novel fluorescence-based sensing mechanism, which is integrated within the glove topology, to help alert the wearer of a perforation in situ. We hypothesized that natural rubber gloves with curcumin infused would yield fluorescence when the glove is damaged, particularly when torn or punctured. The glove design is based on double-dipping between Natural Rubber Latex (NRL) and an inner layer of latex mixed with curcumin, which results in a notable bright yellow-green emission when exposed to UV light. Curcumin (Cur) is a phenolic chemical found primarily in turmeric that fluoresces yellowish-green at 525 nm. The tear region on the glove will glow, indicating the presence of a Cur coating/dipping layer beneath. NRL film is modified by dipping it in a Cur dispersion solution mixed with NRL for the second dipping layer. Using Cur as a filler in NRL also has the distinct advantage of allowing the glove to be made stronger by evenly distributing it throughout the rubber phase. Herein, the optimized design is fully characterized, including physicochemical (fluorescence emission) and mechanical (tensile and tear tests) properties, highlighting the clear potential of this novel and low-cost approach for in situ torn glove detection.

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Section: Resultsmentioning

confidence: 53%

Wearable Natural Rubber Latex Gloves with Curcumin for Torn Glove Detection in Clinical Settings

et al. 2022

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“…Batch dipping is mainly used for irregular shapes or thicker products, like industrial or household gloves and gives lower productivity, while chain dipping is used for mass production volumes of less demanding shapes [13]. Applying latex to the former can be done with different ways, from which the most popular are coagulant dipping (gloves and balloons) and straight dipping (condoms) [48,49].…”

Section: Dipping Process As Production Technology Of Latex Goodsmentioning

confidence: 99%

Natural Rubber Latex - Origin, Specification and Application

Kędzia¹,

Sitko²,

Haponiuk³

et al. 2023

Application and Characterization of Rubber Materials

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The chapter contains information about the origin of natural rubber latex (NRL) (Hevea brasiliensis) and the processing of field latex, considering quality changes occurring during the preparation of raw materials for distribution. The main types of concentrated natural rubber latex are described. A specification of natural rubber latex (NRL) in terms of key parameters tested by manufacturers and customers is presented. Test methods for verifying if the material meets the requirements of ISO 2004 and internal specifications are described based on standards and commonly used techniques. The next subject touched in the chapter is prevulcanization as the processing of concentrated latex with a change of its properties. One of the main industrial applications of NRL as prevulcanized latex (PV) is the production of dipped goods like gloves or balloons. Currently, some trends and challenges relate to sustainability issues are presented (carbon footprint, FSC).

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“…In this work investigations were carried out to find out well prepared concentrated NR latex will be able to form a good film of radiation vulcanized natural rubber latex, RVNRL. Although it is still in the development stage it has been shown [3,4,5,6,9,10,12,13] that it can be used satisfactorily in coagulant dipping processes.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Volatile Fatty Acid Content to Radiation Vulcanized Natural Rubber Latex (Rvnrl)

Chirinos¹,

Jesus²

2012

PTQ

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Natural rubber latex is a dispersion of natural rubber particles in water. These particles are coated with a protein layer which will stabilize the dispersion in water by forming an electric charge in the layer. Any different condition affecting this layer disturbs the stability of dispersion. Microorganism attack disturbs the protein layer and consequently the stability of the dispersion. By adding 1.2% by weight of NH3, the stability of the dispersion can be improved. The fresh latex was irradiated by Co-60 with irradiation dose of 10, 20, 30, 40 and 100 kGy. The results showed a relationship between the volatile fatty acid content (VFA, product from microorganism attack on carbohydrate) and the green strength or the physical properties of vulcanized film. Low VFA number showing a higher physical strength of the film either un-vulcanized or vulcanized. It appeared that the structure was responsible in yielding a good physical property of the film.

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THE MANUFACUTE OF GLOVES USING RVNRL: PARAMETERS OF the COAGULANT DIPPING PROCESS

Cited by 4 publications

References 1 publication

Wearable Natural Rubber Latex Gloves with Curcumin for Torn Glove Detection in Clinical Settings

Wearable Natural Rubber Latex Gloves with Curcumin for Torn Glove Detection in Clinical Settings

Natural Rubber Latex - Origin, Specification and Application

Influence of the Volatile Fatty Acid Content to Radiation Vulcanized Natural Rubber Latex (Rvnrl)

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