Preparation of Natural Rubber/Sodium Montmorillonite Nanocomposites by Latex Mixing Method with Drying Process

Natural rubber/sodium montmorillonite nanocomposites were prepared by using natural rubber latex without using acid coagulation. Cure characterization indicated that Na-MMT retarded the vulcanization reaction of NR. The mechanical properties of the NR/Na-MMT nanocomposites were improved with addition of Na-MMT which is attributed to the reinforcing effect of Na-MMT with rubber. Furthermore, the storage modulus (E) of the nanocomposites was higher than that of the pure NR vulcanizate. Furthermore, glass transition temperature (Tg) was shifted to higher temperature and lower Tan δ value was observed upon increasing loading levels of Na-MMT. Moreover, the nanocomposite showed higher thermal stability than that of the pure NR vulcanizate.

Download Full-text

Chitosan and Natural Rubber Latex Biocomposite Prepared by Incorporating Negatively Charged Chitosan Dispersion

Molecules ◽

10.3390/molecules25122777 ◽

2020 ◽

Vol 25 (12) ◽

pp. 2777

Author(s):

Siwarote Boonrasri ◽

Pongdhorn Sae–Oui ◽

Pornchai Rachtanapun

Keyword(s):

Natural Rubber ◽

Ball Mill ◽

Negative Charge ◽

Natural Rubber Latex ◽

Rubber Latex ◽

Elongation At Break ◽

Opposite Trend ◽

Biocomposite Films ◽

Mixing Method ◽

Biocomposite Film

Generally, natural rubber/chitosan (NR/CT) biocomposites could be prepared by either mixing natural rubber latex (NRL) with CT acid solution or mixing dry NR with CT powder on mixing equipment. In the present work, a new mixing method has been proposed and properties of the obtained NR/CT biocomposites are investigated. CT particles were prepared to have a negative charge that could be dispersed in water by using a ball mill before mixing with NRL. The effects of CT loading varied from 0 to 8 phr on latex properties and physical properties of NR/CT biocomposite films were focused. The results showed that the viscosity of NRL increased with increasing CT loading. With increasing CT loading from 0 to 8 phr, 300% modulus of the NR/CT biocomposite film increased, whereas the opposite trend was found for elongation at break. Additionally, the presence of CT in the biocomposite resulted in an increased elastic modulus (E’) in conjunction with enhanced antibacterial activity against Staphylococcus aureus (S. aureus).

Download Full-text

Experimental and Numerical Study on the Drying Process of Natural Rubber Latex Films

Drying Technology ◽

10.1080/07373930802565830 ◽

2009 ◽

Vol 27 (1) ◽

pp. 59-70 ◽

Cited By ~ 4

Author(s):

D. Bouyer ◽

K. Philippe ◽

S. Wisunthorn ◽

C. Pochat-Bohatier ◽

C. Dupuy

Keyword(s):

Natural Rubber ◽

Numerical Study ◽

Natural Rubber Latex ◽

Drying Process ◽

Latex Films ◽

Rubber Latex

Download Full-text

Effect of Natural Rubber on the Properties of Bitumen and Bituminious Mixes

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.i7732.078919 ◽

2019 ◽

Vol 8 (9) ◽

pp. 526-530

Keyword(s):

Natural Rubber ◽

Natural Rubber Latex ◽

Negative Effects ◽

Rubber Latex ◽

Fundamental Properties ◽

Physical Attributes ◽

Prolongation Of Life ◽

Higher Temperature ◽

To Come ◽

To Receive

In India the leftovers of results of regular elastic latex are stored each year frequently wild causing disjoin natural and other financial negative effects. The ecological strong waste like elastic, swim tops, gloves and so on can be reused betterly so it is useful for what's to come. Numerous investigations have been done to discover other elective material to use as modifiers in bitumen blends on the improvement of its properties and expressway quality. Concentrates still today for the most part centered around mechanical and physical attributes of rubber treated blends in which swell elastic is utilized either as option in contrast to characteristic totals or as added substance. In this exploration Natural Rubber latex (as inflatable’s) has been utilized as bitumen modifier. Common elastic changed bitumen is utilized for the prolongation of life of state streets. The need to receive elastic for the utilization of development of the streets is predominantly that it lessens the expense of development and furthermore reused elastic is utilized as it limits the natural contamination. In this examination Natural Rubber latex (as inflatable’s) has been utilized as bitumen modifier. Bitumen when contrasted with the rubber treated bitumen is bit delicate when presented to traffic burden and temperature. The Rubberized bitumen shaped decreases perpetual distortions because of over-burden out and about and in this way unaffected by the progressions in environmental temperature and improves slide obstruction. Elastic expands protection from stream of bitumen at higher temperature and improves the protection from fragile break at low temperature. The upper surface layer of the asphalt has been made of rubber treated bituminous blends. Rheological attributes of rubber treated bitumen just as fundamental properties of the actualized, rubber treated bituminous blend are exhibited. The practices of the two modifiers were examined by far reaching research facility testing and assessment. It was seen that the expansion of normal elastic gave better by and large execution in the bituminous blends. Subsequently, this shows characteristic elastic may contribute toward better adaptable streets later on. The above properties increment the administration life of rubber treated streets much of the time to in excess of hundred percent when contrasted with that of bituminous streets. Accordingly changed elastic bitumen of streets will join reserve funds with security. Keywords: Inflatable Rubber, Remnants

Download Full-text