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)
An anniversary is the date on which an event that took place or an institution was founded in a previous year, and may also refer to the commemoration or celebration of that event. For example, the first event is the initial occurrence or, if planned, the inaugural of the event. One year later would be the first anniversary of that event. The word was first used for Catholic feasts to commemorate saints. Most countries celebrate national anniversaries, typically called national days. These could be the date of independence of the nation or the adoption of a new constitution or form of government. The important dates in a sitting monarch's reign may also be commemorated, an event often referred to as a Jubilee.