Production of Adhesive from Cassava Starch and Waste Synthetic Materials (original) (raw)

Production of Adhesives from Cassava Starch

The potentials of adhesives production from cassava starch were investigated. Adhesive products from Manihot utilisima and Manihot palmate were compared with a commercial adhesive. Based on the results obtained, equations developed for optimum process conditions that would yield products comparable to the commercial process. The products obtained using these conditions were found to have relatively improved pot-life. There no noticeable changes in the properties of the products for the first 21 days.

Production of Adhesive from Cassava Starch in Owerri, Imo State, Nigeria

The potentials of adhesives production from cassava starch were investigated. Adhesive product from Manihot utilissima was compared with a commercially available adhesive. Improvements in properties of adhesive produced were achieved by investigating the effects of temperature and viscosity enhancer/stabilizer (borax) on the density of the produced adhesive. The results obtained provide a wide range of insight into the production potentials of using cassava starch as a raw material to the production of large scale adhesives

Production of Adhesive from Cassava Starch

Journal of Physics: Conference Series, 2019

The research work investigated the production of adhesive from cassava starch. Cassava tubers were processed into starch-based adhesives, using two different gelatinization enhancers (that is HCl and NaOH) which were introduced separately. The adhesives were produced by considering two varied process parameters, namely percentage weight of borax in starch solution (8 – 20%) and reaction temperature (65 – 85°C). Comparative analysis of the adhesive obtained (using HCl and NaOH as gelatinization enhancers) include the determination of its bond strength, viscosity, drying time, pH and density. As the borax weight percent increases up to 14 % and reaction temperature reduces (using NaOH) the drying time increases, while the drying time reduces as both the borax weight percent and temperature reduce (using HCl). The results of the adhesive physical properties fall within the standard range for each of the properties and this implied that the adhesive produced was of high quality.

PRODUCTION OF CASSAVA STARCH-BASED ADHESIVE

The production of adhesive from cassava root IITA variety TMS 94/0026 was performed. Applications of starch based adhesive are limited due to its unsuitable properties. Improvements in properties of adhesives produced were achieved by investigating the effects of temperature, mass (concentration) of the viscosity enhancer /stabilizer (borax) and gelatinization modifier (acidic, hydrogen chloride acid (HCl) and basic sodium hydroxide (NaOH)) and its concentration on the properties (viscosity, density and pH) of the adhesive produced. The effect of the gelatinization modifier (HCL and NaOH) on the drying time and bond strength of the adhesive was also investigated. Results obtained provide a wide range of conditions for producing starch-based adhesives for diverse applications and required properties. The adhesives produced with sodium hydroxide as its gelatinization modifier had a stronger bond and a maximum drying time of 7.20 minutes compared to a drying time of 4.16 minutes for the adhesive produced with hydrogen chloride acid.

FORMULATION OF CASSAVA STARCH-BASED ADHESIVE.

A more versatile and relatively cheap method of bonding virtually all materials together is by the use of adhesives. Among all the means of fastening, adhesive is the most suitable method because no damage is done to the adherends (as in nailing) and stress is more uniformly distributed. In this research work, various adhesives were produced from cassava which is a locally available natural raw material. The cassava starch was chemically modified to obtain oxidized, hydrolyzed and dexrinized from which the various adhesives were produced by incorporating other chemicals such as plasticizers and tackifiers. Generally, these adhesives were found have good bonding strength on wood, cardboard, paper and leather materials. However, adhesives produced from hydrolyzed and oxidized starch showed exceptionally good adhesive properties.

Processing of Cassava Starch for Adhesive Production

Starch - Stärke, 1990

it is non-specific for starch and has been shown previously to be affected by a large number of variables. In conclusion we agree with the Starch Experts Group of the European Starch Associations that any analytical system on which to base rebate and refund schemes must be both reproducible and free from large numbers of variables and that most of all the procedure should be specific for starch alone [13]. However it is our opinion that the Ewers method does not fulfil any of these criteria and specific methods based on specific enzymic methods ought to be used.

Development of adhesives from Rice & Cassava Starch

2018

Potentials of corrugating adhesive production from cassava and Rice starch varieties were investigated. Rice variety used was BG 358 and the cassava varieties were identified as Manihot utilisima. Corrugating adhesives produced were compared with a commercial adhesive sample which was made of corn starch along with modified corn starch. Based on the results obtained formulations were developed for optimal process conditions for each type of starch. This yielded products comparable to that of the industrial sample. Products obtained from these new formulations were found to have relatively improved bond strength in terms of tensile values and has the same viscosity as the reference sample. These starch dispersions were found to be shear thinning liquids, hence had to avoid the usage of common viscometers. Viscosities were measured in terms of Efflux Seconds by a viscosity cup called Ford cup with an orifice diameter of 4mm.Tapioca starch based corrugating adhesive developed was found...