Synergistic Effects of Nitrosamine-Safe Accelerators for Enhanced Natural Rubber Latex Balloon in Sulfur Conventional Vulcanizing System.
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| Title: | Synergistic Effects of Nitrosamine-Safe Accelerators for Enhanced Natural Rubber Latex Balloon in Sulfur Conventional Vulcanizing System. |
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| Authors: | Chang-In, Thanakan1 (AUTHOR), Anancharoenwong, Ekasit1 (AUTHOR), Suchat, Sunisa1 (AUTHOR) sunisa.su@psu.ac.th |
| Source: | Polymers (20734360). Feb2026, Vol. 18 Issue 4, p438. 17p. |
| Subjects: | Vulcanization, Rubber, Environmental protection, Thermal stability, Tensile strength |
| Abstract: | The vulcanization of natural rubber latex (NRL) relies on accelerators to achieve effective crosslinking by a sulfur conventional vulcanizing system and desirable properties such as tensile strength and elasticity. This study investigates the synergistic effects of carcinogenic nitrosamine-safe accelerators to develop a high-performance and safe NRL vulcanization system. A synergistic combination of 0.36 phr Zinc dibutyldithiocarbamate (ZBEC), 0.36 phr Tetrabenzylthiuram disulfide (TBzTD), and a trace amount of Zinc diethyldithiocarbamate (ZDEC), 0.03 phr, demonstrated optimal performance, yielding superior tensile strength (22.13 MPa), elongation at break (1153%), and thermal stability (Tmax 384.15 °C). Notably, this formulation exhibited below the detectable level limits of hazardous nitrosamines (N-nitrosodimethylamine (NDMA) and N-nitrosodibutylamine (NDBA)). The synergistic nitrosamine-safe accelerator system offers a promising strategy for producing environmentally responsible and consumer-safe NRL products with enhanced mechanical and thermal properties. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | The vulcanization of natural rubber latex (NRL) relies on accelerators to achieve effective crosslinking by a sulfur conventional vulcanizing system and desirable properties such as tensile strength and elasticity. This study investigates the synergistic effects of carcinogenic nitrosamine-safe accelerators to develop a high-performance and safe NRL vulcanization system. A synergistic combination of 0.36 phr Zinc dibutyldithiocarbamate (ZBEC), 0.36 phr Tetrabenzylthiuram disulfide (TBzTD), and a trace amount of Zinc diethyldithiocarbamate (ZDEC), 0.03 phr, demonstrated optimal performance, yielding superior tensile strength (22.13 MPa), elongation at break (1153%), and thermal stability (Tmax 384.15 °C). Notably, this formulation exhibited below the detectable level limits of hazardous nitrosamines (N-nitrosodimethylamine (NDMA) and N-nitrosodibutylamine (NDBA)). The synergistic nitrosamine-safe accelerator system offers a promising strategy for producing environmentally responsible and consumer-safe NRL products with enhanced mechanical and thermal properties. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 20734360 |
| DOI: | 10.3390/polym18040438 |
