CE457/527- Colloid & Surface Phenomena

University at Buffalo, SUNY - Department of Chemical Engineering

Registration Number	207112
• Class time and location	Tuesday & Thursday 15:30 - 16:50; 103 Clemens Hall
• Instructor	Prof. P. Alexandridis, 508 Furnas Hall, 6452911 x2210 palexand@eng.buffalo.edu
Office Hours	Tuesday & Thursday 14:30-15:20
• Teaching Assistant	Hongwang Zhang, 515 Furnas Hall hzhang5@acsu.buffalo.edu ; Di Wu, 504 Furnas Hall diwu@acsu.buffalo.edu
TA Office Hours	TBA

• Announcements

**Check this page for Class updates **

Project due Tuesday April 9, 2002

April 16 (Tue), 3:30-4:50pm, 120 Clemens Hall Project presentations: [Yoghurt/Cheese] [Ice Cream] [Mayonaise/Margarine] [Chocolate]

April 18 (Thu), 3:30-4:50pm, 120 Clemens Hall Project presentations: [Make-up/Lipstick] [Shampoo] [Hair Conditioner] [Liquid Detergent]

April 30 (Tue), 3:30-4:50pm, 120 Clemens Hall Project presentations: [Moisturizing Lotion] [Sunscreen Lotion] [Disinfectant] [Beer/Wine]

• Background

Colloid science is concerned with particles of dimensions in the range 10-9 - 10-6 m (10Å - 1µm) which range from macromolecules (e.g., proteins, synthetic polymers) to finely subdivided multiphase systems (e.g., milk, aerosols). The interfacial area between colloidal particles and the surrounding medium is very large (e.g., 106 cm2 area per 1 cm3 of volume) and thus surface phenomena are prominent. Colloid and surface phenomena are important in biology (cell membranes, fat digestion), pharmaceuticals (drug formulation and delivery), consumer products (foods, detergents, cosmetics), materials (ceramics, polymers, paints, coatings, adhesives), imaging technology (inks, liquid crystals), geology (ore flotation, enhanced oil recovery, clay stability), environment (smog, wastewater treatment), chemical manufacturing (catalysts), etc.

Contents

Interaction forces (dispersion, Lewis acid-base, electrostatic) in interfacial systems; Surface and interfacial tensions and free energies; Colloidal interactions in water; Colloidal stability; Adsorption and adhesion (extended-DLVO approach); Kinetics of adhesion/adsorption; Surface properties of clays and other minerals; Biosurfaces; Association colloids formed by surfactants: micelles, bilayers, microemulsions, surfactant phase behavior; Detergency & emulsions; Polymer structure and properties in solid state & solution; Block copolymers, blends; Polymer surfaces, adhesion, composites; Applications of surfactants and polymers in paints & coatings; Characterization of colloids and surfaces; Colloid & surface phenomena in product design.

Textbooks (on reserve):

C. J. van Oss: "Interfacial Forces in Aqueous Media", Marcel Dekker, 1994.
R. J. Stokes & D. F. Evans: "Fundamentals of Interfacial Engineering", VCH-Wiley, 1997.

• Other related books (on reserve)

J. N. Israelachvili: "Intermolecular and Surface Forces", 2nd ed., Academic Press, 1992.
A. W. Adamson & A. P. Gast: "Physical Chemistry of Surfaces", 6th ed., Wiley, 1997.
D. F. Evans & H. Wennerström: "The Colloidal Domain", 2nd ed. , VCH-Wiley, 1999.
P. C. Hiemenz: "Principles of Colloid and Surface Chemistry", 3rd ed., Marcel Dekker, 1997.
R. J. Hunter: "Foundations of Colloid Science Vol. I & II", Oxford University Press, 1991.
M. J. Rosen: "Surfactants and Interfacial Phenomena", 2nd ed., Wiley, 1989.
R. G. Laughlin: "The Aqueous Phase Behavior of Surfactants", Academic Press, 1994.
B. Jonsson et al.: "Surfactants and Polymers in Aqueous Solutions", Wiley, 1999.
L. H. Sperling: "Introduction to Physical Polymer Science", 3rd ed., Wiley, 2001.
L. H. Sperling: "Polymeric Multicomponent Materials", Wiley, 1997.
A. V. Pocius: "Adhesion and Adhesives Technology", Hanser/Gardner, 1997.
E. L. Cussler & G. D. Moggridge: "Chemical Product Design", Cambridge, 2001.

• Web-based resources

The Surfactants Virtual Library

Poly@SEL

Macrogalleria

Science Citation Index

Current Contents Connect (ISI)

ScienceDirect: Full-text articles from scholarly journals published by Elsevier Science

American Chemical Society Publications: Full-text articles

U. S. Patent and Trademark Office: Patent Full-Text and Full-Page Image

European Patent Office: Patent Search

• Assessment

The course grade will be based on the following:

2 Midterms 1/3 of the grade each midterm.
Term project 1/3 of the grade.

The midterm exams will test knowledge and comprehension of the material assigned in class, and also application and analysis of same.
The term project will focus on synthesis (create, predict, design, improve, propose) and evaluation (select, decide, critique, justify, verify, debate, assess, recommend). Students working in teams of four will be assigned a topic on applications of colloid and surface phenomena, prepare a written report on this topic, and present their findings in an oral presentation in class and at the CE457_527 website (where the Power Point presentation and report will be posted).
Project: students will work in teams of four on topics to be assigned in the first week of class.

Deliverables

Written report (with references/links) on CE457_527 web page
Oral 20 min presentation in class (PowerPoint-format presentation placed on CE457_527 web page)
Participation in class: highly desirable - each class will start with a review of the material presented in the previous class - instructor will ask questions in order to assess student understanding of the material

• Syllabus

Click here for the course Syllabus

Project topics

Colloid and surface phenomena aspects of: (1)Yoghurt and Cheese, (2)Ice-cream (regular and low-fat), (3)Mayonaise (regular and low-fat), (4)Chocolate, (5)Beer and Wine, (6)Food thickerners, (7)Make-up, (8)Lipstick, (9)Sampoo, (10)Hair conditioner, (11)Moisturizing lotion, (12)Sunscreen lotion, (13)Liquid laundry detergent, (14)Disinfectant.

Click here for the project 2002 Term Projects -

Site Maintained by Hongwang Zhang
Last Updated, January 18, 2002
Any suggestions or comments are welcome.