1 Beat the eggs in a large mixing bowl. 2  Melt the 2 tablespoons shortening, and add it and the sour cream to the eggs. 3  In another bowl, sift together 1 1/4 cups sugar, flour, cocoa and 1/4 teaspoon salt. 4  Add these dry ingredients to the egg mixture. 5  Stir the batter until smooth.
Natural polymers. Polymers are very common in nature; some of the most widespread naturally occurring substances are polymers. Starch and cellulose are examples. Green plants have the ability to take the simple sugar known as glucose and make very long chains containing many glucose units.atural polymers. Polymers are very common in nature; some of the most widespread naturally occurring substances are polymers. Starch and cellulose are examples. Green plants have the ability to take the simple sugar known as glucose and make very long chains containing many glucose units.
3. Synthetic polymers A variety of synthetic polymers as plastic (polythene), synthetic fibres(nylon 6,6) and synthetic rubbers (Buna-S) are examples of man-made polymers extensively used in daily life as well as in industry.There are three different types based on the structure of the polymers.. Synthetic polymers A variety of synthetic polymers as plastic (polythene), synthetic fibres(nylon 6,6) and synthetic rubbers (Buna-S) are examples of man-made polymers extensively used in daily life as well as in industry.There are three different types based on the structure of the polymers.