The phase II to I transformation process of isotactic polybutene – 1 (iPB-1) is influenced by the environment besides the usual physical factors. The phase II → I transformation rate depends, first of all, on the segmental mobility of the polymer chains. Environmental substances which are good solvents of iPB-1 increased the phase transformation rate at room temperature. Other substances, such as air, water, some acids or blends with atactic polypropylene, decreased the transformation rate in comparison with a sample exposed to a phosphorus pentoxide desiccant environment. The environmental effects also influence several other structural characteristics, such as sample crystallinity and crystallite size.

等规聚丁烯-1（iPB-1）从II到I的相变过程除了通常的物理因素外，还受环境的影响。II→I相的转化率首先取决于聚合物链的节段迁移率。作为iPB-1良好溶剂的环境物质在室温下提高了相变速率。与暴露于五氧化二磷干燥剂环境的样品相比，其他物质（例如空气，水，某些酸或与无规聚丙烯的混合物）降低了转化率。环境影响还影响其他几个结构特征，例如样品的结晶度和微晶尺寸。