#!/bin/bash
comp="LP"
n_names="abc456.com,def123.com,w xy098.com"
IFS=',' read -r -a n_split_list <<< "$n_names"
IFS=, read -ra "$comp"_list < <(printf '%s,' "${n_split_list[@]}")
export ${comp}_list
# check content of new array
declare -p ${comp}_list
IyEvYmluL2Jhc2gKCmNvbXA9IkxQIgpuX25hbWVzPSJhYmM0NTYuY29tLGRlZjEyMy5jb20sdyB4eTA5OC5jb20iCklGUz0nLCcgcmVhZCAtciAtYSBuX3NwbGl0X2xpc3QgPDw8ICIkbl9uYW1lcyIKCklGUz0sIHJlYWQgLXJhICIkY29tcCJfbGlzdCA8IDwocHJpbnRmICclcywnICIke25fc3BsaXRfbGlzdFtAXX0iKQpleHBvcnQgJHtjb21wfV9saXN0CgojIGNoZWNrIGNvbnRlbnQgb2YgbmV3IGFycmF5CmRlY2xhcmUgLXAgJHtjb21wfV9saXN0Cg==