Cross linking is a stabilization process in polymer chemistry which leads to. multidimensional extension of polymeric chain resulting in network structure. Cross-link is a bond which links one polymer. chain to other. It can be ionic or covalent. Cross linking changes a liquid polymer into âsolidâ or âgelâ by restricting the ability. of movement. When polymer chains are linked together by cross-links, they lose some of their ability to move as individual. polymer chains.
anniversary - the date on which an event occurred in some previous year (or the celebration of it) day of remembrance. day - a day assigned to a particular purpose or observance; Mother's Day. birthday - an anniversary of the day on which a person was born (or the celebration of it)
A birthday is the anniversary of the birth of a person or an institution. Birthdays are celebrated in numerous cultures, often with gifts, cards, a party, or a rite of passage. Many religions celebrate the birth of their founders with special holidays. There is a distinction between birthday and birthdate: The former, other than February 29, occurs each year, while the latter is the exact date a person was born.