ABSTRACT
The production of top-bond using cattle bone waste and the assessment of the quality parameters like moisture content, pH, density, ash content and viscosity were carried out using standard analytical method. The result revealed the moisture content of the produced glue to be (17.5%) ash content (7.4%) and density (1.53g/cm3). These results when compared with glue standard having 8-16% for moisture, ash contain (2-5%) and density (1.270g/cm3) reflected higher values. However the pH (5.0) and viscosity (47.80cp) recorded lower values when compared to glue standard values of (5.0-8.0) for pH and 80.00cp for viscosity. An indication that the glue produced compared favorably with standard glue and can be used as an adhesive.
CHAPTER
ONE
1.0 Introduction
1.1 Background
of the study
Animal
glues are natural polymers derived from mammalian or fish collagen, the major
structural protein constituent of skins, connective tissue, cartilage and
bones. These glues are organic colloidal substance of varying appearance,
chemical composition and physical properties. It occurs in a wide variety of
forms and colour, with the colours ranging from all shades of white, yellow and
brown. Animal glue has existed since ancient times as archeological discoveries
indicate that the Egyptians used glue as an adhesive more than 400 years ago.
Greeks and Romans letter used animal and fish glue to develop of veneering and
marquetry, the bonding of thin section or layers of wood (Petukhova, 2000).
While
China utilized fish, ox and stay horns to produce adhesives and binders for
pigment. Adhesives may be found naturally or produced synthetically. Adhesive
of animal origin are synthetic and have been found to be non-toxic bio
degradable and economically friendly. On the other hand, natural glues are
derived from animal and vegetables sources like bones, casein, blood albumen,
collagen, starch, gums; cellulose etc. Bones constitute the major solid waste
generated from abattoir operation in the processing of edible portions of
slaughtered animals for consumption (Aniebo et
al., 2011).
These
wastes are disposed in ways that have been reported to cause the pollution of
surface and underground waters and air quality (Odoemelam and Ajunwa, 2008) as
well as affect the health of residents living within the vicinity of the abattoirs
when the bone are burned. The inefficient management of the bones are generated
particularly at Obo Annang market in Essien Udim has created a variety of
problems that endangers the health of the public and the environment as a whole. Therefore this
work was designed to utilize the waste bones generated for the production of
glue as this will serve as an effective means of removing the waste from the
environment as well as create wealth.
1.2 Aims and Objectives of the Study
The
aim of this work is to produce glue from waste cow bones generated from Obo
Annang abattoir and is guided by the following objectives:
i.
To produce glue from waste cow bone generated from Obo Annang abattoir
ii.
To ascertain the quality of the glue such as moisture content, pH, density, ash content and viscosity.
iii.
To compare the value obtained with values of standard glue.
1.3
Scope and Limitation of the Study
The
scope of this study covers the production and quality indicator test of top
bond using cow bone as raw material, and is limited only to the production and
assessment of quality parameters due to financial constraint.
1.4 Definition
of Terms
Top-Bond:
- This is a white high-quality water based adhesive.
Adhesive: -
This is any non metallic substance applied to one or both surface of two
separate items which binds them together and resists their separation.
Isoelectric Point: -
This is the pH at which all positive and negative charges within the molecules
are balanced and the molecules carries no net electrical charge.
Isinglass:
- this is a form of gelatin obtained from the air bladder of the sturgeon and
certain other fish, used in adhesive.
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