Fossil resin ( colloquially called amber ) is a natural polymer found in many types of strata throughout the world, even the Arctic.
12.
An additional note : many natural polymers vary in composition ( for instance DNA, proteins, carbohydrates ) even when " pure ".
13.
The novel technique employs a droplet microfluidic device to encapsulate pancreatic islets in hydrogel made of alginate, a natural polymer extracted from seaweed.
14.
As a result, much research has gone into investigating natural polymers that can be tailored, through processing methodology, toward specific design criteria.
15.
Like other natural polymers, a major problem with pectin is inconsistency in reproducibility between samples, which may result in poor reproducibility in drug delivery characteristics.
16.
However, renewable natural polymers are now in development which can be used for the production of biodegradable materials similar to that of oil-based polymers.
17.
Braconnot, along with Christian Sch�nbein and others, developed derivatives of the natural polymer cellulose, producing new, semi-synthetic materials, such as celluloid and cellulose acetate.
18.
The carrier material of the masterbatch can be based on a wax ( universal carrier ) or on a specific polymer, identical or compatible with the natural polymer used ( polymer-specific ).
19.
The pulp and paper industry is eager to figure out how to regulate a tree's production of the natural polymer, because removing it is one of paper-making's biggest expenses.
20.
In this capacity, Lewin dealt with scientific research planning in key areas important to Israel, and began researching natural polymers, such as the fibers found in local vegetation that can serve as renewable raw materials for industry.
