Thesis (M.S.)--University of Wisconsin--Madison, 1965. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 106-112.

The purpose of the present study is to determine the effect of three "non-rinse" washing compounds upon the tensile strength of cotton percale, in order to have some basis for recommendation as to use when teaching laundering to homemaking students and homemakers.

No description available.

Call number: LD2668 .T4 1948 G3 / Master of Science

Purging compounds allow for rapid colour and material changes in plastics converting machines. They have both a cleaning and a purging action. The cleaning action refers to the removal of contaminants, e.g. carbon deposits, from the die, barrel and extruder-screw surfaces. This mechanism relies on conventional detergency in combination with high wall shear stresses. The purging action refers to the observed narrowing in the residence time distribution and is less well understood. The action of a purge compound may encompass both the cleaning and purging mechanisms in order to achieve the desired effect. In industry the effectiveness of a purge is determined by a visual observation of the extrudate. Therefore, a scientific method was required to quantitatively determine the efficiency of each purging mechanism under a set of fixed experimental conditions. In this study, a method was developed using a laboratory film-blower, which made use of a phthalocyanine blue pigment to impart colour to the film produced. The method was used to test the efficiency of various commercial purge compounds in switching the colour of film from blue to clear. The analysis was achieved by measuring the residual pigment concentration in the blue polymer film using a UV -Visible spectrophotometer. Commercial purge compounds function by means of various mechanisms such as filler abrasion, solvent dissolution, the dislodging of deposits with the aid of surfactants, etc. This study also considered the use of slip additives as an additional purging mechanism. In proposing that slip additives can contribute to a purging action, several slip additives where tested in polyethylene (PE), polypropylene (PP) and acrylonitrile butadiene styrene (ABS). The slip additives polypropylene wax and polyamide showed a significant increase in the MFI of PE whereas the additives polar wax and polyamide exhibited a slight increase in MFI of PP. Three additives, namely, polyamide, polypropylene wax and polar wax had showed noticeable improvement on the MFI of ABS. The slip additives that showed a significant improvement in polyethylene were tested together with six different commercial purge compounds. These compounds were tested for their colour change efficiency using polyethylene and switching from blue to clear in a laboratory film blower. It was found that the slip mechanism contributes very little to the purging action. Polymeric materials tend to adhere to hot metal surfaces. When the material continues to adhere to the metal after cooling down, cleaning of the processing equipment becomes very difficult. A purge manufactured by the CSIR, Pretoria, exhibited this problem. This study also covers an investigation into overcoming the adhesion problem of this purging compound. / Dissertation (MSc (Chemistry))--University of Pretoria, 2006. / Chemistry / unrestricted

by Monica Cheung Wai, Eppie Wong Yuen Yee. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1990. / Bibliography: leaf 65. / ABSTRACT --- p.ii / TABLE OF CONTENTS --- p.iii / ACKNOWLEDEGMENTS --- p.v / Chapter I. --- INTRODUCTION --- p.1 / Chapter II. --- STUDY OF THE PURCHASE OF DETERGENT POWDER / Chapter 2.1 --- Market Situation for Detergent Powderin Hong Kong --- p.3 / Chapter 2.2 --- Rationale of the Study --- p.4 / Chapter 2.3 --- Scope of the Study --- p.5 / Chapter 2 .4 --- Objectives of the Study --- p.6 / Chapter III. --- LITERATURE REVIEW / Chapter 3.1 --- Relevance of Understanding Consumer Purchase Behaviour in the Marketing Concept --- p.8 / Chapter 3.2 --- Howard Model of Consumer Behaviour --- p.8 / Chapter 3.3 --- "Engel, Kollat and Blackwell Model" --- p.9 / Chapter 3.4 --- Definition of Detergent Powder Purchase --- p.10 / Chapter 3.5 --- Research Findings : Hoyer --- p.11 / Chapter 3.6 --- Choice Tactics in Detergent Powder Purchase --- p.13 / Chapter 3.7 --- Product Information in Memory --- p.16 / Chapter 3.8 --- Applicability of Hoyer's Research Findings --- p.17 / Chapter 3.9 --- Relevance of Judgmental Models in Detergent Powder Purchase --- p.17 / Chapter IV. --- METHODOLOGY AND FRAMEWORK FOR ATTACK / Chapter 4.1 --- The Pilot Study --- p.21 / Chapter 4.2 --- The Observation Phase --- p.22 / Chapter 4.3 --- The Questionnaire Survey --- p.23 / Chapter V. --- SUMMARY OF RESEARCH FINDINGS / Chapter 5.1 --- Observation Survey --- p.27 / Chapter 5.2 --- Salience of Various Evaluative Criteria --- p.28 / Chapter 5.3 --- Propensity for Brand Switching --- p.29 / Chapter 5.4 --- Consumers' Evaluation of the Product Attributes of their Current Brand --- p.32 / Chapter 5 .5 --- Attitude --- p.34 / Chapter 5.6 --- Difference in Purchase Behaviour among Consumers across Demographic Profiles --- p.35 / Chapter 5.7 --- Demographic Profile of the Sample --- p.38 / Chapter VI. --- DISCUSSION AND IMPLICATIONS / Chapter 6.1 --- Decision Process Behaviour and Advertising Strategy --- p.43 / Chapter 6.2 --- Brand Switching Behaviour and Promotional Strategy --- p.45 / Chapter 6.3 --- Satisfaction with Current Brand and Relevance of Promotional Efforts --- p.46 / Chapter 6.4 --- Salience of Evaluative Criteria -- Pricing and Product --- p.47 / Chapter 6.5 --- Purchase Behaviour among Consumers across Demographic Profiles -- and its Marketing Implications --- p.48 / Chapter 6.6 --- Limitations of the Study and Suggestions for Further Research --- p.49 / APPENDICES / Chapter Appendix A: --- Observation Sheet --- p.51 / Chapter Appendix B: --- Schedule of Questionnaire Survey --- p.52 / Chapter Appendix C: --- The Questionnaire (English and Chinese versions) --- p.53 / Chapter Appendix D: --- Research Data --- p.58 / Chapter Appendix E: --- T-test Table- --- p.61 / Chapter Appendix F: --- F-test Table --- p.63 / BIBLIOGRAPHY --- p.65

Thesis (Ph. D.)--UCLA, 2009. / Vita. Description based on print version record. Includes bibliographical references (leaves 642-654).

It was the objective of this project to provide a glass cleaner formulation for a wet wipe application with cleaning and anti-fogging properties. This glass cleaner formulation was developed for automotive glass i.e. interior of windscreens. This formulation relates to a glass cleaner with a composition comprising of: (a) a blend of amphoteric surfactants; (b) a solvent system with a combination of glycol ethers; and (c) an aqueous solvent system. This glass formulation must provide good cleaning properties while also providing good wetting and sheeting properties to assist with anti-fogging properties. The objectives were obtained using 2 specific approaches: The first was by using a blend of 2 amphoteric surfactants in an alkaline medium, allowing the glass surface to become more hydrophilic which will also assist with reduction of surface tension on the glass surface. The second was by using the glycol ethers that have good coupling properties and surface tension reducing properties. The formulation was evaluated using commercial standard test methods as per the industry. A predictive model was successfully obtained for each of the five criteria that were evaluated using the 25 formulations derived from the statistical design. There were variables and variable interactions that were antagonistic for some of the criteria which were found to be synergistic for others. To achieve satisfactory cleaning, the fogging rating had to be compromised.