Gauche-minus rotation state

Flory has adopted the use of a matrix to represent the dependency between rotational states of neighboring bonds. For the typical case of a polymer with three rotational states such as trans (t), gauche plus (g+), and gauche minus (g ), the statistical weight matrix is... 

As an example, the statistical weight matrix for polyethylene with its three-fold rotational states (trans, gauche plus, gauche minus) is... 

This chapter would not be complete without a further discussion of the various conformational states in polymers (28-34). The rotational potential energy diagram (Figure 2.11) (23) indicates three stable positions or conformations— the trans, the gauche plus, and the gauche minus. 

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